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!"

Sack Whack on the Back Crack by Zenovia's Playa June 14, 2009

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jimmy sack whack

another word for jimmy tap but much more vicious

"Hey, do you know what a jimmy sack whack is?" "No, what is it?" "I'll show you." "Oww, why'd you do that, now I'm not going to be able to have kids."

jimmy sack whack by Beegis June 23, 2006

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Sack and Whack

Stuffing your balls inside a vaginal cavity like packing a pipe with your thumb while jerking off onto declared body part such as stomach or back (if flexible). Also called "sack n whack".

Hey babe, mind if we sack and whack on your back while I read phrack on your mac? k thx hun.

Sack and Whack by deadly muffin November 16, 2010

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Whack Sack

Common name for "testicular akathisia"--also commonly known as "jimmy nuts": an uncontrolable urge to persistently shift, manipulate, or joggle one's testicles.

"Yo--he got he the Whack Sack serious. Dude plays with his nuts all day."

Whack Sack by Even Cleaveland January 3, 2007