Top Definition
A plastic grocery (liquor store/beer store) bag filled with every flavor of Four Loko which come in many assorted color cans therefore making the bag look like a rainbow. Four Loko is constantly releasing new flavors so it is hard to keep up with them all which is why a rainbow bag only needs to have at least all 5 of the "original" flavors : Fruit Punch, Orange, Uva (Grape), Watermelon, and Blue Raspberry. Watermelon and Blue Raspberry were not "original" flavors but are the 2 oldest flavors that weren't launched with the company.
John: What did you get man?
Tim: Got us a fucking rainbow bag!
John: Oh fuck, good looks son, were gettin' wasted tonight.
by ajnjc May 17, 2010
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.