Spit on the back, Empty the sack

Doing a girl from behind, once you are about to climax pretend to cum by spitting on her back, pull out, then when she turns jizz in her eye.

Little tip...Aim for the middle, you'll both of her eyes.

Spit on the back, empty the sack

She thought I emptied on her back, she wasnt to know it was spit, see turned, then boom!! I emptied my sack in her eyes, the perfect shot.

by barb heaps December 10, 2006

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

back of my sack

the area between the back of your ball sack and asshole

"You can lick the back of my sack."
"Justin likes to lick the leftover toilet paper from the back of my sack."

by Veeetoe April 27, 2006

Sweaty-Sack BackDraft

note: This takes some planning, a pair of nylon gym shorts, and willing ..or unaware partner to work. When a guy has been doing an athletic activity and has swamp-sack (foul smelling scrotum) he will close one leg opening tight and then he gets his significant other to blow air up his shorts only to have the air circulate and exit back out the same leg hole into her/his face.

I plopped down on the couch after finishing my run. I told "Jane" my nuts were hot so she decided to blow up my short to "cool them off" but I closed off the other leg and she got the "Sweaty-Sack BackDraft"

by mackbooyaa May 22, 2013