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1 definition by
youmadbra
ISF
ISF
means "instant
skullfuck
". To
isf
someone is to
pwn
or destroy someone completely, such as in day to day life, sports, or in video games.
"We are going to ISF that that team later in
dodgeball
!"
"My girlfriend ISFed me
earlier
when she
dumped
me!"
by
youmadbra
December 11, 2009
Flag
Get the
ISF
mug.