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2.
Ingredients:

1/2 stick butter
One quart sandwich bag

Place 1/2 stick butter in bag...Place bag in microwave...heat to preference (recommend no more than 25 seconds).

Masturbate using butter bag.
Evan always ran back to the butter bag when his retarded, underage girlfriend was taken away by her parents.
by Stanky Mustache July 29, 2010
 
1.
Derogitory term used for a woman's breasts.
Look at her set of butter bags!
by Jeff Ross July 12, 2005
 
3.
n. A plastic bag, that when filled with butter or margarine, may be used as an alternative to sexual intercourse.
"I filled my butterbag."
by lotus.tear December 20, 2006