To outhooker - to be a better hooker than another hooker. This can be achieved in a variety of ways, both natural and otherwise. For example, Hooker A has ginormous boobs, while Hooker B has a flat chest - hence Hooker A has outhookered Hooker B.
Jane - Did you end up having sex with Adam?
Cindy - No, that bitch Sara outhookered me.
Jane - How?
Cindy - She said she swallows