Definitions by deadly muffin

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