look up any word, like donkey punch:
 
1.
a person(s) to take full on physical action on someone, whether is be someones body or face while he/she is completely belligerent.
I told Romeo to unleash the beast on some stuck up prick and he definitely rocked his world his fist!
by Lana D. Rey March 31, 2012
 
2.
What happens to you when you drink too much Monster energy drink.
Hey Kory stop drinking so much monster, you might Unleash the Beast.
by Brainslug December 11, 2011