If you want to know what not to do in court, the short list is this: don’t miss your hearing, don’t dress like you’re running errands, don’t react to what other people say, don’t argue with the judge, don’t lie under oath, don’t talk about your case online, and don’t ignore your attorney. Each of these can damage your credibility, your case, or your freedom, sometimes all three.
Skipping or Being Late to a Hearing
Not showing up is the most damaging thing you can do. In a criminal case, you are required to be present at arraignment, every stage of trial, and sentencing.1Cornell Law – Legal Information Institute. Federal Rules of Criminal Procedure Rule 43 – Defendant’s Presence Miss a date and the judge will almost certainly issue a bench warrant. That warrant doesn’t expire. A routine traffic stop weeks or months later can land you in custody, and the original charge now comes with a failure-to-appear charge stacked on top, with any new sentence running consecutive to the first.2Office of the Law Revision Counsel. United States Code Title 18 – Section 3146
Civil cases punish absence differently but just as painfully. If a defendant doesn’t respond or appear, the opposing party can ask the court for a default judgment, which means the court rules against you without ever hearing your side. Once a default is entered, the court can set damages and enter final judgment.3Cornell Law – Legal Information Institute. Federal Rules of Civil Procedure Rule 55 – Default; Default Judgment Undoing a default is possible but hard, and there are strict time limits on asking.
Being late is less catastrophic but still costly. A judge who has been waiting on you starts the hearing already annoyed, and significant tardiness can be treated the same as not appearing at all. Build in time for parking, security, and finding the right courtroom. Aim to arrive at least 30 minutes early.
Dressing the Wrong Way or Bringing the Wrong Things
Dress as you would for a conservative job interview. Slacks or a skirt, a collared shirt or blouse, closed-toe shoes. Avoid shorts, graphic t-shirts, athletic wear, ripped jeans, or anything revealing. Clothing should be clean, fit properly, and carry no slogans or images that could be read as inflammatory. Hats and head coverings are generally prohibited, with exceptions for religious headwear like hijabs, yarmulkes, and turbans.4United States District Court – Southern District of West Virginia. Dress Code and Courtroom Etiquette
Courthouse security works like airport security. Firearms, knives, and recording equipment including cameras are banned at federal courthouses. Pocket knives, multi-tools, and pepper spray that you carry daily will be confiscated. Most courthouses don’t store prohibited items, so you may have to leave the building to secure them off-site before you can enter.5U.S. Marshals Service. What To Expect When Visiting a Courthouse Leave anything questionable in your car.
Electronics need their own attention. Most courtrooms require phones and smartwatches to be off or in airplane mode before you walk in. Taking photos, recording audio or video, or live-streaming is prohibited in virtually all courts.6United States Court of Appeals for the D.C. Circuit. Electronic Device Policy of the U.S. Courts of the D.C. Circuit A phone ringing mid-proceeding has gotten people held in contempt. Food, drinks, and gum are out too. Silence your phone, put it away, forget it exists until you leave.
How You Act While You’re Sitting There
Everything you do in a courtroom is being watched, not just when you’re on the stand. Stand when the judge and jury enter or leave.7United States District Court Southern District of Texas. Courtroom Etiquette Stay quiet unless someone addresses you directly. Be polite to the clerk, the bailiff, and opposing counsel. Address court staff as “Mr.” or “Ms.” Your behavior in the hallway, the elevator, and the parking lot can be observed and reported back.
Body language is where most people slip without realizing it. Sighing audibly, rolling your eyes, slouching, or shaking your head while someone else testifies signals disrespect. Clenched fists suggest anger. Crossed arms read as defensive. Laughing at the wrong moment makes a judge wonder whether you take the matter seriously. Jurors notice, and they form opinions about your character from those reactions, sometimes faster than they form opinions from testimony.
Attention counts as much as composure. Looking at your phone, reading unrelated material, drifting off, or falling asleep tells everyone in the room you don’t care about the outcome. Keep your eyes on whoever is speaking. Sit up. Stay engaged even when the proceeding drags.
Speaking Out of Turn or Arguing With the Judge
Address the judge as “Your Honor” and nothing else. Answer with “Yes, Your Honor” or “No, Your Honor” rather than nodding. Stand when the judge speaks to you and when you speak to the judge, unless told otherwise.7United States District Court Southern District of Texas. Courtroom Etiquette
Never interrupt. Not the judge, not an attorney, not a witness. Outbursts, unsolicited comments, or emotional reactions that disrupt proceedings can produce a contempt finding. Federal courts can punish contempt by fine, imprisonment, or both, for any misbehavior in the court’s presence that obstructs the administration of justice.8Office of the Law Revision Counsel. United States Code Title 18 – Section 401 State courts have equivalent powers. In extreme cases, a judge can have a disruptive person physically removed, and the trial can continue without them.1Cornell Law – Legal Information Institute. Federal Rules of Criminal Procedure Rule 43 – Defendant’s Presence
When your turn comes, listen to the whole question before answering, and answer only what was asked. Rambling, volunteering extra information, or guessing hands the opposing side material to use against you. If you don’t know, say “I don’t know.” If you can’t remember, say “I don’t recall.” Both are acceptable and far less damaging than a wrong guess.
Don’t argue with the judge about a ruling. The judge’s decisions are final in the moment, and challenging them out loud only makes you look uncooperative. Even when a ruling feels unfair, accept it calmly. Your attorney’s job is to make legal arguments and preserve objections for appeal. Your job is to stay composed.
Lying Under Oath
Perjury can turn you from a party in a case into a criminal defendant. When you testify, you swear to tell the truth, and intentionally making a false statement about a material fact while under that oath is a federal crime punishable by up to five years in prison.9Office of the Law Revision Counsel. United States Code Title 18 – Section 1621 – Perjury Generally Most states have equivalent statutes with comparable penalties. A conviction creates a permanent record and destroys your credibility in any future proceeding.
Dishonesty is broader than outright lies. The oath requires “the whole truth,” so leaving out key information, exaggerating, or embellishing all count as deception. Opposing counsel is trained to expose inconsistencies. If you gave a deposition, signed an affidavit, or made any prior sworn statement, those earlier statements can be used against your trial testimony. The contradiction then gets highlighted for the jury, and at that point the damage is done regardless of which version was accurate.
The practical rule is simple: tell the truth, even when it hurts. An unfavorable truth you own is far less damaging than a lie that gets exposed. If a truthful answer undercuts your position, your attorney can put it in context. If a lie gets caught, no context can fix it.
Engaging With the Other Side
Do not speak to, gesture at, or make comments toward the opposing party or their attorney inside the courtroom. All communication goes through the lawyers or as directed by the judge. This isn’t just etiquette; it keeps you clear of anything that could be characterized as intimidation. Staring, aggressive eye contact, or pointed facial expressions directed at the other side reflect poorly on you.
The hardest moment comes when someone says something about you that is flatly untrue. The urge to react is strong, and you have to swallow it. Angry outbursts, visible frustration, or crying can disrupt the court and undermine your credibility. Your attorney will address inaccuracies through cross-examination or objections. A calm demeanor while the other side speaks actually works in your favor because it suggests confidence.
If you’re a witness, know the sequestration rules. Either party can ask the court to exclude witnesses from the courtroom so they can’t hear other witnesses testify.10Cornell Law – Legal Information Institute. Federal Rules of Evidence Rule 615 – Excluding Witnesses If you’re sequestered, don’t discuss the case or other testimony with anyone outside the courtroom. Violating a sequestration order can lead to sanctions, including having your testimony struck entirely.
Posting About the Case Online
Anything you post on social media can be used as evidence against you. Courts routinely admit Facebook posts, Instagram photos, tweets, and direct messages when they’re relevant. In personal injury lawsuits, defense attorneys scour plaintiffs’ profiles for photos showing physical activity that contradicts claimed injuries. In criminal cases, posts showing weapons, threats, or associations have supported convictions. Attorneys can request activity going back months before the events in question, and courts regularly grant those requests when they’re narrowly tailored.
Deleted posts aren’t necessarily safe. Metadata, cached versions, and account records can make deleted content retrievable. Deleting posts after litigation has started can also count as spoliation of evidence, which carries its own penalties, including adverse inference instructions where the judge tells the jury they can assume the deleted content was unfavorable to you.
The safest approach while any legal matter is pending is to stop posting about it. Don’t discuss the case, the other party, the judge, or the proceedings. Don’t post photos that could contradict your claims. Don’t vent about the process. If a restraining or protective order is in place, social media contact with the protected person, including mentioning or tagging them, can be treated as a violation and bring new criminal charges. When in doubt, stay off, or run the post past your attorney first.
Ignoring Your Attorney’s Guidance
Your attorney has watched courtroom dynamics play out hundreds of times. When they tell you not to react, not to answer a question a certain way, or to dress differently, that advice is grounded in experience with what actually moves judges and juries. Ignoring it is one of the most common and most preventable ways people hurt their own cases.
If your attorney says to let them handle an objection, let them. If they tell you not to speak to the other party in the hallway during a recess, don’t. If they prepare you for cross-examination by telling you to keep answers short, follow that even when the urge to explain yourself feels overwhelming.
This applies to the decision about whether to testify at all. In criminal cases you have a constitutional right not to take the stand, and sometimes exercising that right is the strongest move available. If your attorney recommends against testifying, the recommendation is a calculation about risk and reward, not a comment on you. Overruling that advice without fully understanding the reasoning is a gamble with serious stakes.