Derogatory sex position: The act of sticking a finger in the butt of a women during doggy sex,reaching for her face and hooking her mouth like a fish. Possibly originating from a man obsessed with fishing.
"I gave it to her from behind and before she could notice, I gave her the oldrusty fish-hook..."
Similar to the Dirty Sanchez. While pounding your girl(or guy, whatever your pleasure), you rub and make slow semi-circles around her asshole and the without warning you JAM your finger in her ass. When she turns around to yell HEY!! you give the ole' fish-hook. The shit on your finger resembling rust on a hook. You can go for the Double Rusty Fish-hook, but you need to stick another finger in your own ass right before you jam it in her and then WHAM-O!
Dude, I was railing the chick the other night and she was moaning so damn loud that I had to give her the rusty fish-hook just to get her to shut up...
This is the beautiful act of where you are laying the pipe and you stick your finger in your partners brown eye. wiggle you finger till your partner starts to squirm. at this point with one single sweep, hook your finger in their mouth an pull hard. the twist..... while you are pulling like you caught a beast of a fish spit in their mouth. let go. then proceed to blow your man juice on them and laugh hysterically. note they are so preoccupied with the spit in their mouth they neglect to realize their was a shit covered finger in their mouth
Mike gave blakes mom the rusty fish hook with a twist last night. it was great.