A slang word used as a big behind or bottom. Is normally known to be a good thing to have back-off.
joe: wow shes go a nice back-off
tom: i know

Joe: haa she has no back-off!
tom: alie
by helen Mck November 11, 2008
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something you say when someone is bothering you, picking on you, or really pissing you off. see leave me alone
hey, kid. where'd you get those cheap-ass glasses, the dollar store.
"okay, seriously dude. Back off, i'm not having it."
by Suburbanz71 June 13, 2018
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A reply generally given by bentnose boys to the law-abiding consumer to convince them goods are legit. Now often used sarcastically to refer to stolen goods.
Lula Mae: This TV is very affordable. It's not stolen is it?
Vinny the Mafioso: Nah, it fell off the back of a truck
by oz November 8, 2003
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dont care, wont harm you a bit, wont stress over it

Possibly derived from shingles, a condition which can be brought about by severe stress among other things, after having chicken-pox. This causes painful blisters and scabs, usually on the back.
"The Coke company is the one who has to pay for the repairs, so really it's no skin off my back," said Mark Conlin, the campus plant foreman who oversees maintenance and custodial work.
by blopnuts March 22, 2005
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