sack in the back

The act of a male tucking his penis and balls between his legs (in a Buffalo Bill type style) while turning around, bending over and exposing his ass with bulging sack to passersby.

As my roommate Jim returned from the shower, he tried to gross me out by performing his "sack in the back" routine in my presence.

by Ray Boston January 19, 2007

Sack Whack on the Back Crack

The act of thrusting the man junk so far into a woman's (or man's if you are homosexual) anus multiple times that the balls consistently slap against the "host's" butt cheeks making a sound like a great high five.

KirtKanReed: "i am soo hungover bro, i can't remember anything about last night."

ChadKant: "you wouldn't want to."

Zenovia's Playa: " YEAH! BECAUSE CHAD GAVE YOU THE sack whack on the back crack WHILE YOU WERE SHIT FACED DRUNK LAST NIGHT AND PASSED OUT ON THE COUCH!"

by Zenovia's Playa June 14, 2009

Sack from the back

When your man ain't acting right...so you grab his nuts and squeeze from the back.

I'm pissed... he deserves the sack from the back.

by Jazmuffin July 7, 2016

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