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

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

Butt Ninja 

An incredibly pungent fart that occurs without warning.

I was in the middle kissing her when this BUTT NINJA comes out of nowhere and kills the mood! I was so embarrassed.

Butt Ninja by MR.ZERO July 25, 2011

butt ninja 

The state of a ninja where you rape people's butts

"dude my butt just got raped..."
"By who?"
"I have no clue"
"Maybe it was a butt ninja"

butt ninja by theylimek May 11, 2010

ninja butt-punch 

An unexpected, very rapid punch to the buttocks - typically for retribution - most often achieved while walking up a staircase. "Ninja butt-punch" is quickly, quietly spoken by the attacker as he makes his move, with "BUTT" heavily accented as the fist makes contact.

"ninja BUTT-punch" -- "Ahh!! You faggot!!!"

ninja butt-punch by alftoid January 4, 2010

butt face ninja monkey 

some shit word that sounds fuckin funny

dude your mom is a butt face ninja monkey

butt face ninja monkey by cris rock September 24, 2010

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