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
mugGet the OSFMmug.

OSFM

Oh Shit Fuck Me
by XMIGGY February 14, 2012
mugGet the OSFMmug.