The act of dying the hair on ones cooter blue and adhering googly eyes to it so that it resembles the "cookie monster". Another partner may then insert cookies into the vagina and proceed to consume them upon intercourse. The person who acts as the recipient of the cookies is known as the Cooter Cookie Monster
Chris: Dude, last night Rachel and I totally tried the Cooter Cookie Monster
Bob: Oh man that's hawt!!!
Chris: Yeah dude, I've still got cookie crumbs on my balls though!
Bob: Oh man, that's nasty!