a person who is sneaky enough to stick his abnormaly large penis in your ass while your asleep.

A casual invitation / threat used by an individual that is not afraid of fucking someone up.

Someone claiming to be a Ninja who clearly has no ninja-like qualities, is well versed in deepthroating and has mad rookie status. Generally also extrodinary cockblockers
Daz is a hell fag ninja. He's the leader of FNC (Fag Ninja Clan)