Sack Back

When one man places his sack on another man's back. Used in the penis showing game

Wacko:(standing shirtless working out)I love working out
Ed: (standing naked)I love my sack on people's backs
(jumps on Wacko's back, and his sack is on Wacko's back, thus giving him sack back)
Wacko: God damn it Ed!
Ed: Gotchya Wacko!
(Proceeds to kick Wacko in the ass twice)

by I Cruuuuuuuuuuuuuuuuuuunch you May 24, 2009

Extended Back

When a chick has no booty.

Guy 1: "Damn bruh, that female has NOOOO ASS."
Guy 2: "Honestly bro, she has an extended back."

by JSav November 29, 2014

Sugar Backing

Pulling on your weiner.

I caught my son sugar backing in his room.

by Uncle Stonky May 24, 2010

back scrape

The unfortunate circumstance that occurs when a male is receiving oral sex and the person giving the oral sex accidentally applies teeth to the man's penis. Typically, this occurs when the penis is exiting the giver's mouth, hence 'back' scrape.

Last night I hooked up with a chick and, when she was sucking my dick, I

was the victim of some unfortunate back scrape.

by guy who likes to make it rain December 22, 2010

rail back

illegal immigrant that hangs under trains to get into america.

i think i picked up a few rail backs on my way back to america

by peter yanker May 11, 2009

Bull back

Smashing a girl doggystyle and reaching over her head, putting two fingers in her nose, and pulling her head back...put in a woah girl if she struggles

Last week I gave Susan the bull back still she started kicking

by Erick shockwave April 28, 2017

back pecs

Round bulges of fat deposits creating a skin fold in and around the upper and lower lats

by Al ralphs & Ryan MacKenzie February 16, 2003