the burnt flap hanging off the side of a stale muffin; often used as an insult to people who are hella crusty
guy 1: dude that girl is sooo hot
guy 2: yeah but she's crusty AF
guy 1: dang it
guy 2: I hate it when girls turn out to be muffin flaps
by lizmaster March 12, 2015
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Barbara isn’t wearing any panties and I caught a glimpse of her muffin flaps
by El_choco14 August 13, 2018
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