Sooner or later, when playing TTT, you will find someone's body. If you're particularly unlucky, you might even be someone's first found body.
This page will attempt to explain how bodies in TTT work, important details to be aware of, and what you can do to get the most out of the situation.
I'm not sure how you've managed to get to the 'using a computer' stage of life without learning this, pal.
Giving you the benefit of the doubt and assuming you mean uniquely in the context of TTT, a 'body' is the most used term to refer to a dead body, or corpse.
When a player is killed in TTT, they leave behind a body that holds valuable evidence about their murder.
Given that most of the bodies that could be found in a game would be generated, so to speak, by the Traitor team eliminating Innocent players, it is often troubling to find one.
Discovering a body is often accompanied by a sinking feeling in the discoverer's gut as it often means that a Traitor may be nearby; interacting it may even cause them to come to finish you off too.
Generally speaking, you want to identify the body, regardless of the danger.
Bear in mind that only Traitors benefit from not identifying bodies, especially their fellow Traitors if they intend to revive them.
If a Traitor dies, and is revived, they'll still be a Traitor in the vast majority of cases. Identifying their body while they're dead will out them as a Traitor permanently.
If you try to take the Traitor that may be nearby on, and lose, you double the amount of missing evidence by becoming just another body.
All this to say, finding a body burdens you with glorious purpose. You have a responsibility to your team, as an Innocent, to clarify who is and isn't alive. Information is power.
Formally reporting a body requires reaching it and pressing 'E' on it, or your interact key. Doing this also opens a sub-menu full of that juicy, delicious, evidence.
Once you've pressed 'E' on a body, a menu that looks like this should appear:
To report the body, you may have to press the button in the bottom left of the menu. Some servers do not require that you do this, and some servers only let Detectives see this menu.
So, from this example, we can decipher that a player called 'Thighs' was an Innocent, as it shows us on the left side both with colour and the text below their Steam avatar.
With all of this information, and evidence, you can see why it is so valuable to both report, and employ the use of, this information from bodies.
You might think, 'Wow! Bodies give so much useful information, golly gee whizz! How will the Traitors get out of this one?'
Well, firstly, it's an honour that you're taking an interest in what I'm saying Burt Ward, but please calm down.
Secondly, you're going to need to evaluate if you could reasonably get away with the murder you might just leave it. Getting caught red-handed is always worse, and necessitates more sloppy actions.
With time, you'll learn to make decent cost/benefit analyses on hiding the body and how easy, or necessary, it'll be.
If the body you've just created and yourself are away from other people, you may be able to just run away; potentially swapping the gun you've used for another to shake guilt, and so forth.
Typically, you can get too bogged down in hiding bodies; they can also serve as great bait, though, if you're using trap items.
Traitor roles can use the Magneto Stick to 'pin' bodies up, making a mockery of them, or creating a sense of paranoia for Innocent players when they find their 'Traitor Nest'.
Ultimately, making the body inaccessible is the best play, be it through dropping them off of a map, into a hazaradous area, or by burning them with the Traitor shop item, the Flare Gun.
Actually, given that every role is able to pick them up with the Magneto Stick, and their innate ragdoll-y characteristics, TTT players goof around with them a lot and carry them places for a variety of reasons.