The act of taking a full, unopened beer can and striking it to one's own head, then making the beer explode.
Alexa: Nate you should rumpul that bud light!
Nate: Nah i enjoy bud light, but i'll rumpul that natty light for sure.
Alexa: You won't pussy!
Nate: Watch me bitch
by NTswelly January 29, 2012

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