Ninja Out

To sneak out of place without anyone knowing.

To leave a place early without saying bye to anyone to avoid them making you stay

I don't want to drink anymore so I'm going to ninja out before anyone notices.

Danny always tries to ninja out early because he cannot hang.

Greepy

Gross and Creepy = Greepy

Why does that guy keep looking at us? He looks GREEPY!

That guy following us around is kind of GREEPY.