Top Definition
The longer hairs that protrude either side of a woman's underwear or bikini.

A fishy smelling mustache, also can be protruding from the undies.
Dude, I was swimming in the pool yesterday and when i dived underwater I saw this this fat chick had a proper Mogstash hanging out. It looked like a walrus down there.
by lokey69666 December 22, 2009
5 Words related to Mogstash

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