What is Ninjabate?
1.
Verb. To Masterbate with utmost stealthiness, similar to that of a ninja.
Spirited Away was such as shitty movie, I had to whip it out and ninjabate to pass the time.
See
2.
To masturbate, fondle, or otherwise touch oneself sexually with one or more unaware person(s) in the vicinity.
"She was so hot in that movie, I just couldn't help but sit back and ninjabate."
See