deuce ninja 

(noun) Any dog that can catch a frisbee or jump more than one and a half times its own height. These athletic feats of agility distinguish certain dogs as ninjas instead of regular shit factories.

The deuce ninja jumped the fence again chasing the mailman.

deuce ninja by Scrapheap Markus January 12, 2008

Ninja Deuce 

When you take a particularly nasty shit in the bathroom of someone you hardly know, then tell no one, like a true ninja master.

Holy shit dude, I am pretty sure that Rachel's friend whatsherface, ninja deuced us last night. Thats the last time i have her friends over for Mexican food, twat.

Ninja Deuce by Arsenal89 August 15, 2008

Ninja Duece 

Preparing to do something when you suddenly have to take a dump.

"Man, i was about to play some CoD4 when a ninja duece popped up."

Ninja Duece by Goat41 July 12, 2009