Back off

a command to stop intimidating or teasing someone

back off, bitch !

by William Warney December 9, 2014

Back to the Future

The first movie to one of the top 10 trilogies ever made. A story of a boy who travels back in time 30 years and almost loses his very existance in the process. Watch the film to get a better understanding

Have you seen Back to the Future. It's f**king ace

by ashman November 15, 2003

follow back

If you follow somebody on social media, following back is if they are to follow you after you followed them.

@instagram says; I followed you, follow back?
@john says; Already following you!

by bIurryface July 9, 2015

back boob

a fatty deposit on the back that hangs in such a way that it resembles a nippleless breast. May sometimes result from a bra that is too tight, causing temporary back boobs. Mostly seen on very fat women or men with manboobs.

"He's got a sick fetish--he goes to the nude beach just to look at back boobs."

by Mike Oxhard September 30, 2006

back to front

A sexual move/position vaguely referenced on BBC3 program "Him & Her" - never fully explained.

Paul: "It's when ya ... well first of all you do her in the ... what, you've never done back to front?"
Steve: "No, of course not."
Paul: "You're like a fuckin' nun."

Back to front.

by Lord_Conflict September 14, 2010

back twin

If a stranger looks identical to one of your friends from behind, then the stranger and your friend are back twins.

Guy 1: Hey Ben, what's up?

Guy 2: (turns around) Huh? I'm not Ben.

Guy 1: Oh, sorry, you're just Ben's back twin.

by Woodson April 15, 2007

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