Top definition
I Fucked Ur Mom Last Night.

Its also know as IFYMLN which is I Fucked Your Mom Last Night.
Steven : Dude bring me some coke
Gianluca: Bring it yourself!
Steven : STFU and bring it to me
Gianluca: Dude IFUMLN so you better show me some respect
by Elepzia January 17, 2010
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