Top Definition
1) A commonly used gym bag or traveling bag that can be used to transport large quantities of beer.

2) A bag in which a bottle of beer explodes/breaks and the beer is left in the bag.
Ryan i just love your big black beer sack

All hail the mighty beer sack.

Stop having orgasmic laughs about my beer sack.
by thefloyd2112 December 12, 2009

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.