Top Definition
Foaming at the mouth; The abbreviation for a hyperbolous phrase used to describe hysterical behavior rooted in either laughing or crying.
My brohorts made me LOL so hard I was FATM!
by thekristin January 14, 2009
Fapping at the moment

used on cam4 or porno cams or regular message boards and blogs.
hawt_latina: my boobs are very fuckable. u want sum honey

DragonSlayer666999: srry im FATM
by RicoSwavey June 04, 2009
For All The Marbles

This basically means when a lot is at stake
yo b, my friend tatman just fucked this hillbilly whore he met at the taxi stand FATM.
by Hank Nutshot May 21, 2008

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