Act of male masturbation, can only be performed by circumsized men. Where the masturbation becomes so vigorous and violent that the hand actually hits the testicles while stroking the shaft.
I went to sleep and woke up and my friend Billy was "hitting the sack" next to me wearing nothing but a lamp shade over his head.
by greendayrulz7 March 11, 2010
Get the Hitting the Sackmug. by greendayrulz7 March 11, 2010
Get the Tickle the Clammug.