Making the form of a hook with one's index finger. This is a little piece of sign language prevalent in prisons. Basically your prison bitch uses "the hook" to latch onto your belt loop or lets "the hook" be seen so the other inmates know he is someone's bitch.
Steve Ford is showing the hook, that's because he's Tim's bitch.
by T-Bone December 03, 2003
A verb, which means to place ones hooked finger or fingers between another's butt cheeks with an intent to startle, although it is often done in a joking, playful manner between friends. This procedure is normally done while the "receiver" is wearing clothes, although there is no reason why it couldn't be done without clothes.
"Arrrrrr" Llewellyn cried as he startled Stefanie with "the hook" to her behind.
by SashiJapan14 January 04, 2011