Ninja Rowson is one of the best maths teachers to have. He will perform a dance called the Ninja dance where he moves around as If he was a ninja whilst impersonating a Chinese/Japanese accent. He is a good teacher although sometimes he gets in a strop and sits back down in his chair for around 10 minutes of the 60 minute lesson you have with him .
"It's not fair you have an alright maths teacher" - Tyler
" what are you on about you've got Ninja Rowson"
" what are you on about you've got Ninja Rowson"
by XD :) July 29, 2019

by ironpikachu February 19, 2010

To ninja poof would be to smoke (marijuana, tobacco, etc.) while hidden, usually very near people. Bushes work well.
by Cordmeister July 8, 2010

To masturbate/fap silently.
Dave: Why is fapping called fapping?
Max: Because fap is the noise it makes.
Dave: I've never heard that before ..., I must be some kind of ninja fapper
Max: Because fap is the noise it makes.
Dave: I've never heard that before ..., I must be some kind of ninja fapper
by honkthedonk January 17, 2013

the act of taking two 15 inch black dildos and tieing them together with a string like nunchucks. while shiving one up your ass you then swing the free dildo around and sneak up behind your partner and hit them with it. thus creating a ninja like expirience.
by The Urban Flame February 23, 2011

asshole: "What is that outside?"
you: "I'm not sure, but i think it could be NINJAS."
asshole: "There are no ninjas on the lawn."
you: "OF COURSE THAT'S WHAT THEY WANT YOU TO THINK; THEY'RE NINJAS."
you: "I'm not sure, but i think it could be NINJAS."
asshole: "There are no ninjas on the lawn."
you: "OF COURSE THAT'S WHAT THEY WANT YOU TO THINK; THEY'RE NINJAS."
by SnowhuouV October 24, 2012
