To annoy someone, to give them a hard time or to be in their business.
Ex. of being on someone's back:
Girl 1 - It's too cold for you to be wearing shorts.
Girl 2 - Damn, bitch get off my back.
Backhand someone across the face.
The pimp raised his hand to the hooker and proceeded to back-five her across her face till she was able to pay him the allotted amount of cash.
The back of the pimps hand was sore from giving out so many back-fives.
When your back is as hard a cutting board, from working in a restaurant.
Man! My restaurant back is killing me today. I need to see a chiropractor, or get a new job!
To give yourself more shit than others around you. You're in control of the level of torment others give you. Just like a bushfire, a well executed backburn helps contain out of control fires! So to does backburning yourself during a conversation, It helps prevent more shit giving from mates.
Person 1: what's with the pink shirt? You look gay as fuck!
Person 2: well, I love dick
Person 1: haha...you fuckhead
Person 2 has successfully back burned to prevent Person 1 giving more shit!
A man who has a lot of sex and is very good at doggy style.
Girl#1: Did you know that guy over there? Girl#2: I did a long time ago, he's one hell of a back cracker.
An designated area where one or more {homosexual) parts dept. employees handle truck parts, and each other.
"Meet me at the Back Counter, Marco".
"Ok Joe".
Or "Back door, Back counter, whats the difference?"
A bobble back in definition is when a human being has such a fat arse that it bobbles like a bobble head
Hey Alison that is some big ole bobble back you’ve got yourself there lass!