Urban Dictionary: OSFM

One Size Fits Most (A more accurate version of the saying: One Size Fits All)

Dude 1: Do condom come in different sizes or OSFM?

Dude 2: OSFM. Except magnums are bigger if you packin' heat.

by tacticalhampster September 28, 2012

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Oh Shit Fuck Me

OSFM i forgot my sweater at home.

by XMIGGY January 24, 2012

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