One who is capable of sneaking around and having sex with many people without being detected by the others, especially applicable when married or in a long term relationship.
Carrie is a real slut ninja. She's fucking her co-worker, her neighbor, and the guy at the car wash. Her boyfriend doesn't have a clue.
The most awesome title in the world.....there can only be one and until he resigns and passes the title on no one else can claim it....currently held by a one Mr. Andy Schmitt
to subtly drop insults without warning or provacation rendering the recipient defensless from this verbal assault as they are unaware and or have a delayed response
His verbal assasination of me was a barrage of ninjasults from which I could not escape.....well played sir.