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short for I Set My Friends On Fire.
ISMFOF is an American post-hardcore/experimental band duo formed in 2007. in 2008 they signed to Epitaph Records and released their first album "You Can't Spell Slaughter Without Laughter".
the duo is most commonly know for their song Crank That (one Soulja Boy's screamo cover) and Sex Ed Rocks that they featured in the smosh video.
dude1: have you heard of ismfof?
dude2: yeah! my favorite is Crank That!
by J-Lima December 23, 2008
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