Someone who snakes women from their friends, either girlfriends or women they are trying to get with, and puts it in them.

When you eat dirt for the first time and leave your family to build a shack in the woods

To go after the vagina area with a fervor not uncommon to a predatory animal, such as a shark. Remorseless and unrelenting, until the pussy has been obtained 'sharked'.

primarily common to boys who have girlfriends that are unwilling to give 'it' up. The need to pussyshark is a playful yet strategic tactic method used to get the girl in the mood i.e. sexually aroused.