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1.
I Know That Feel - When someone describes a feel that you have experienced for yourself.
Tom - Dude I just walked in on my gf fucking her dog.

Me - iktf bro
by Crusty Dickwad June 28, 2012
 
2.
acronym for I Know That Feel(ing).
>i've never had a gf :(

iktf
by spiegalr May 28, 2012