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1.
to thank the fucker for the horibble one night stand in a jokingly way
I have to thankfukky or else he will try to call me again
by thing 2002 July 30, 2010
 
2.
to tell someone to thank a certain asshole
Thing 1- Go thankfukky those people over there for talking throughout the whole movie

Thing 2- yeah, they were being such assholes
by thing 1001 July 30, 2010