crack in the back

when someone has a butt-thigh

small, flat, ass that merges with the back/thighs

person without a baadonk,a butt that is not able to be seen
"she's got a crack in the back"
"what"
"it's not called a butt, its just a crack in da back"
by raycbdot July 14, 2007
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canvas back

A term for a person who gets knocked out a lot ending up on the ground.
Insultor: "You've gotten your ass kicked so much, they call you canvas back."
by Mnkyonyrbk August 05, 2005
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Crack-Back

A humpback (someone with a large hump on their back)who is either on crack or sells crack. They are most commonly found on street corners and in dark alleys. Almost every town has their own crack-back who supplys them with crack and/or a good laugh, because a guy with a big hump on his back is fuckin funny.
Erik- Dude, wanna go pwn those noobs jamie and heather in foosball again?
Jake- Hell yeah... but lets crackalax for an hour or so before we go
Erik- Aight. But where are we gonna get the crack mayne?
Jake- Don't worry i know this crack-back who is always hangin out behind taco bell... we can score some off him
Erik- Word.
by Wlnga September 24, 2006
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Back Attack

When a person walking in front of you appears to be super hot, but then they stop to turn around their face is butt ugly.
Dog check out that dime piece with the midrift and mini skirt up ahead, yeah lookin pretty hot. Oh wait she's turning around... Aweee, Back Attack!
by deanrendar January 21, 2011
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Back Up On It

A phrase used when a small to medium sized girl with blonde hair and a heart shaped booty " pops locks and drops it" infront of you in a very flirtacious manor by "dipping it low" and pushing her ass into you on the way up, in hopes of getting your attention.
Guy 1: " Dude i was just here minding my own buisness and suddenly she came out of no where and tried to "back up on it" against my leg!

Guy 2: " All she wanted was for you to say something about her ass, she feeds on attention."

Guy 1: "Well i tried yelling "Back off Bitch", but it didn't seem to work, i will just be ready for next time."
by AvengerMan September 30, 2009
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Back- log

'Back- log', refers to the amount of time that you have not masturbated for and so you have a 'Back- log' because eventually it will all come out. :)
Chris: Oh dude, i'm hating this holiday - a whole week of Back- log

Simon: Yeah, tell me about it, i'm gonna have a huge one when i get home
by asdqwezxc August 04, 2011
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