back sack

an unfourtunate birth defect where instead of having a nutsack next to your tallywacker, you have one on your back

I fell off my bike and my back sack exploded

by ice dragon April 4, 2009

Sack to Back or Sac to Back

Sack to back is the term used when two males ride a motorcycle or scooter together.
Also referred to as "Butts to Nuts"

Those guys are riding "Sack to Back or Sac to Back"

by Indetrucks March 4, 2011

Sack in the Back

When a person places their scrotum between the ass cheeks of another.

Bro 1: Hey bro, can put the sack in the back
Bro 2: I would love your scrote between my cheeks!

by LlihTter November 6, 2017

The Sack That Smiles Back

When the folds (Wrinkles) in a scrotum resembles that of a smiling face. Eyes and Mouth are required, nose is preferred, but not required. THE SACK MUST BE HAPPY!!! Must be declared by a spectator, not the one whom the sack belongs to!

If the "FACE" is hairy, 'Ball Bunyan That Smiles Back' may be decalred!

Donny: Dude, George, I think I got The Sack That Smiles Back, but I'm not sure... Help me out

George: O, definitely dude!! I can feel the happy vibes going on around your nutsack. That even may be a 'Ball Bunyan That Smiles Back!'

Donny: GET THE CAMERA MAN!!

by Door2Door_DoorSalesman February 18, 2011

sacked in the back field

when a nigga nutt in ya butt

She finna get sacked in the back field, deadass timbs b

by Whomst October 28, 2017

back sack attack

The assault of one's testicles from behind. Generally, the victim is bent over, however a standing attack up the legs is also commonplace.

Often times, the assailant will yell "back sack attack!" either at contact, or after the strike is complete.

Winding up for a kick, Ben positioned himself behind a bent-over Matt. Using mostly the flick of his foot unto the scrotum, Ben yelled "Back sack attack!" before Matt ever got the chance to react. Devolving into his fetal position, Matt sat writhing in pain.

by MrPistachio February 9, 2013

Back, Sack and Crack

The removal of hair from the back, nutsack and between the ass cheeks to achieve a more groomed and streamlined look. Usually done by waxing at a salon, or by various do-it-yourself means in the home setting.

Jason has been begging his girl to toss his salad, but she says she won't get near it til he gets a Back, Sack and Crack.

by Topaquita April 19, 2004