Back-sack

Back Sack is the backside of ones scrotum.

A: Yo dog, I can't believe you just ball-tapped me from behind, you got all back-sack.
B: Ew, check out that old guy's back-sack hanging out of his pants.
C: Check out Katz's shaved back-sack.
D: Mom, Jacob put his back-sack on my face.

by J'Nathan Bo'Jingles May 25, 2008

Shagger's Back

A pain in the lower back, usually attributed to having too much sex

I've got the worst case of shagger's back after meeting that girl last weekend

by Dave Oliver March 9, 2009

back hamsters

rolls of back flab caused by wearing a too tight bra

"Get a bigger bra darling, you look like you've got a pair of hamster pouches on your on your back, you know, back hamsters!"

by Ma Woo December 30, 2007

Back to the Future

A awesome movie that made 2015 look awesome, but here it is, 2015..... and it is boring as shit

I wish that our 2015 was more like Back to the Future's 2015 :(

by AKG!@# January 7, 2016

Side back

a slang term, common in marching band stretches involving the side of your back made up by Tran

"Manny, are you stretching your side back?"

by Marching weirdo July 24, 2016

Back Bacon

A game where you mount or jump on the back of a police officer for as long as possible.

Hey john, im bored, wanna beat the back bacon record of 23secs? " Yeah ,sure. I know where they chill

by Daffron June 14, 2010

y-back

Tank top worn by bodybuilders that has two straps in the front and comes together in the back as one strap making a Y appearance.

Travis has a sweet y-back, but Tyler definently fills it out better because he is more huge.

by tommytoughnuts April 24, 2008