Ninja in the Night 

1) To go out and ninja in the night.
2) To pork a girl, at night(or somewhere dark), with blinding speed.
3) To frolic amongest the treetops.

Ninja_Matty: We must go out and ninja in the night.
teh_ninja_naf: Agreed. Let me get my boomarang
Ninja_Matty: I'll get our ninjaroos mounts! =D

Ninja in the Night by Matthew Larsen February 23, 2005

Ninja in the Night 

When a ninja has mastered the arts of night stealtage and has gained the use of all 6 senses (including the psychic abilities they gain through deathly training), they are able to go out and ninja in the night without worrying about jerks spotting them.

Guy: "Dude, did you see that?"
Dude: "Guy, stfu and get me some pie."

Ninja in the Night by Nathan March 1, 2005