Ninjahead 

The act of performing oral sex, whilst maintaining a stealth like prowess, keeping the receiver unaware until climax.

I gave my boyfriend ninjahead last night, he didn't wake up until he busted a nut.

Ninjahead by Sharp2112 June 17, 2017

Niggahead 

The alternative to the word nigga.

"What's Gucci niggahead ?"

Niggahead by devan mcauley February 10, 2017

ninjabeast 

A ninja beast is someone who is fast like a ninja and awesome like a beast. Or Someone who is just amazing

That guy is such a ninjabeast.

ninjabeast by NInjabeast January 12, 2009

ninjaed 

To stealthily edit published online content after the fact, correcting a mistake - either factual or grammatical in nature - after a commentator has called out said mistake (usually in the comments section) without the original author acknowledging that an error has occurred.

What happened to the part in this article about (erroneous element)? It's totally gone!

Dude, the author ninjaed that part already.

ninjaed by T.Kovacs June 18, 2011

NinjaHarrisonMC 

Very famous youtuber that has a potential of making millions. He made a video about him getting exposed and will have over 5k subs by December 2094.

Fan 1: Yo did you see Ninjaharrisonmc's new video.
Fan 2: Yea man he got exposed by C O N N E R.

NinjaHarrisonMC by Judlig Wan Beetjoven October 20, 2018

Ninehead 

The term used to describe folks with a large forehead. It comes from the word "forehead," but theirs are just too damn large, so we refer to them as "ninehead." Now, if you've got a sense of humor, you'll realize that "fore/four" is a number, as is "nine." So, it's like saying "fourhead."

Oh, I'm so funny.

"Damn, that girl got a huge forehead."
"Son, that ain't a forehead, that's a ninehead."

Ninehead by Sassmaster. [MHMM GIRL] July 26, 2009

Ninjaed 

Getting 'ninjaed' in Halo 3, is when somebody jumps backwards over your head and assassinates you.

I got a boner after I ninjaed these two guys in a row.

Ninjaed by that guy with the mustache February 12, 2010