Buttninja 

Asian buttpirates

AGH! The buttninja are attacking! COVER YOUR ASS!

Buttninja by Brian Blake December 10, 2003

buttninja 

one who is a sneaky a-hole & hard to spot before it's too late, yet considerably annoying on every level that no one wants to be around...usually due to them just being an idiot & not being able to help their own stupidity..

"That guy who showed up at the last minute to go out with the rest of us is such a buttninja!...we HAVE to ditch him!!

buttninja by NomadJr November 5, 2010

buttgina 

See bussy

James you got in that buttgina yet??

buttgina by BennyBlair87 October 7, 2021

brittninja 

a very rare species of amazing. usually sarcastic, loving, and addicted to house md.

brittninja, britninja, brittninja, brittninja, brittninja

brittninja by [b.a.d] December 20, 2008

butt ninja 

Undeniably one of the sneakiest and scariest ASSassins of the world. Known for being able to PENETRATE the most secure facilities in the world with incredible ease with the sole intention of raping man ass. Butt ninjas have super human abilities allowing them to walk through walls, turn invisible, cling to ceilings, and run faster than light... translation: they will have sex with your butt no matter what.

Bro-1: "I was too afraid to shower at the empty gym last night. I kept thinking I saw a butt ninja out of the corner of my eye."
Bro-2: "That's a lie, a butt ninja would've never gotten spotted by a douche like you. Probably just a normal rapist."

butt ninja by pokstad January 25, 2008

Buttinjaflies 

That sudden, unexpected and mostly inexplicable onset of butterflies in the tummy. From "ninja butterflies" (or "butterfly ninjas").

I was feeling okay but I've just had an attack of buttinjaflies!

Buttinjaflies by SteveLaw July 7, 2011

butt ninja 

A karate butt humper

"woah! i just got raped by a fucking sneaky butt ninja! i hate my life!"

butt ninja by poopOnsatan April 26, 2003