Although taken from the term "Kung Fu," it does not
mean a form of kink relating to Kung Fu but instead is the act of using
one's kinks against them to make them squirm, blush or fluster. Usually one is
left in a mess of feels and sometimes could half-heartedly curse their tormenter for successfully being a master of Kink-fu.
Person
One: I think you
beat them at Kink-fu.
Person Two: Kink-fu?
Person
One: They're a blushing and flustered squirming mess. Yeah, Kink-fu, you used their kinks against them to get them all flustered.
Person Two: So that's what they were cursing me about.