Top Definition
Attending several Greek social functions in one evening, often without invitation and at a university other than your own.
"Allie really wants to go to Sig Ep but I want to go to Lambda Chi instead!"
"There's a SAM party tonight, too!"
"Looks like we're going to have to go fratcrashing!"

"Hey, look! A frat house! Let's go inside!"
"Woooooo fratcrashing!"
by Blurrr January 24, 2008
10 Words related to fratcrashing

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