Stop crying, ninja up, and hit him or her in the neck with a throwing star."This sentence can be used for any situation."
by bmoten November 13, 2010
(nin-juh up) verb. The act of tying a black t-shirt to ones face and doint subversive activities. Usually used when stealing cigarettes or blowing up peoples cars.
Johnny Twobags - Man, Ame has a pack of Newports, but shes asleep and I'd have to crawl over her.
Mr. Dopey - You'd better ninja up and do that shit
*Johnny Twobags ties his shirt up and backflips off the ceiling.
Mr. Dopey - You'd better ninja up and do that shit
*Johnny Twobags ties his shirt up and backflips off the ceiling.
by Lonus the Terror March 11, 2007
Fast, silent, and deadly. He has the guise of a normal UPS man, but in reality he is a ninja. It is rare to catch a glimpse of him as he stealthily drops packages on the doorsteps of victims everywhere.
by BooJoh August 6, 2004
by Big daddy665 July 21, 2021