It's "weeb" or anime slang for a mans genitalia/penis.
The word "Shinobi" coming from the anime "Naruto" of course.
Jakes shinobi stick was long and hard.
Grass shinobi. Meaning... Getting a kill in a pvp game by a crazy way in which is an mmo or shooter game.
Wow! What A Grass Shinobi Moment!!!
Grass Shinobi meaning I obliterated these people in PvP and that makes me awesome
OH MY GOD MAN IM JUST SO Grass Shinobi
Somebody who mains shinobi in the game For Honor, they are most likely sad weebs who want their character to be good again after getting dicked down into the hole that is nerfs
THAT DODGE SPAMING SHINOBI MAIN NIG--
A person who can engage in sex so stealthily that not only do the people In the adjacent room or next door don’t know what’s going on; but the person being sexed doesn’t even know you’re ther.
Damn I was at a college party and I had to go sex shinobi!! She passed out in my bed!!!
That dude is such a SHINOBI, he buys the most expensive steak in the restaurant just so he can post it on his insta.
Getting head, oral, fellatio, dome, top, face, neck, etc.
Ayo, shawty bout to come to and bless wit sum shinobi
also...
Lemme get sum shinobi