To back can be just defined as to support.
But it can also be slang for pulling out some kind of weaponery like a knife,
this is mostly used by people in Gangs or people involved in the streets.
Examples of to back:
Worker: My chef really backed my proposal for a new toilet.
Rapper: Hella chitter chatter if I back it you be dartin' of ...
Lyric of SL - Gentleman
An act of 4 makes (usually black) take a gay Male behind a building and take turns stretching his poop shoot. Usually with out lube to make sure he feels even bit of the pain.
Hey did you hear?
Tyrone was doing a Chad in the back!
When girl bends over and you can see her camel toe from behind
Bro, did you see that girl in the yoga pants bend over? I saw complete Back Side Toe.
To be immature
Just because you don't like something doesn't mean you need to sit in the third row back.
A sexual term used to postpone sex to come later.
“Let’s circle back to that ass”
One who supports and sends an exposing(nude) picture of themselfs in return to receiving one
The boy asked the girl if she is team send back in high hopes
When someone slips a Gurken up your backside and slaps your ass so hard that pickle relish comes out.
My wife needed some relish to finish her deviled eggs so she gave me a pickle back.