Example:
Clyde: "What vice did you see on the videotape, Talangar? Is it the work of Sauron's magic?" Token returns to the table and places the tape there
Token Black: "I'm not playing anymore." walks off
Stan: steps forward "Uh well wait, what'd you see?"
Token: stops and turns "I don't know, I don't wanna know. I'm out." claps his hands, then walks back into the house, sliding the door open and closed. The boys look on
Randy: "Yes... uh... you see Token, that was called a pornographic film. Uh, it shows adult men and adult women having sexual intercourse." Token does not respond, but instead continues to stare blankly "You see when a- when a man and woman are in love, the man puts his penis into a woman's vagina. It's called love making, and its part of being in love." There is a long pause before Token at last speaks
Token: And when a woman has four penises in her at the same time. Then stands over the men and pees on them, is that part of being in love too? Five midgets. Spanking a man. Covered in thousand island dressing. Is that making love?"
Mr. Black: "Jesus! What kind of porno was that?!"
Gerald: "Back-Door Sluts 9"
Mr. Black: "Oh Jesus! Not that one!"

Example:
Token from south park, Charley in the TV show Friends.

Any black character in any movie that is neither the protagonist nor antagonist, is unimportant to the plot and does not significantly contribute to it, preferably dies before the end, usually does not end up with the girl. sometimes is the sidekick if the role is unimportant enough, and is very often comic relief (often in stereotype-enforcing manner).

Example:
person A:''Is Token from South Park a token black guy?''
person B:''Ironically,he's not.He actually has a major role in some episodes.''

Example:
Token Black Guy: Damn dat shit was whack!

Example:
(Brad) Hi Stephani
(Stephani) Hello Brad whose this?
(Brad) oh Im sorry this is my buddy DeShawn
(Deshawn) Whatsup girl!

....DeShawn is the token black friend

Example:
Every teen movie has em.

In scream3, Deon Richmond who played Tyson Fox was one.

Example:
Jefferson is dead!

Example:
Will sometimes have a catchphrase or quirk to give the character some resemblance of a personality.

You may notice at times the character will not even be given a name (although the actor will still be credited.)

The character Marsha from the American sitcom The Brady Bunch had a token black girl as a friend, if you blinked you might have missed it.

Example:
White Friend : OK ill see u tomorrow dawg! (Goes to give dap)
Token: Ok, (gives dap, walks away)
Token: I fucking hate these people! If i wasnt getting so much head i would snuff all these assoles!