one who stealthily can steal another's beer. basically a beer ninja is one stealthy m0-fo and can do it right in front of yo face.
Yo digga, tonite i stole a beer and used kim's fat ass as a screen when i leaned over and grabbed it off the fuckin coffee table. I'm a hella sweet beer ninja.
Hahahahaha Dave was so drunk i walked right up to him and stole his beer like 2 feet from his face. fuckin hilarious. Man that makes 2 beers tonite. I'm such a fuckin beer ninja, yo.
Hahahahaha Dave was so drunk i walked right up to him and stole his beer like 2 feet from his face. fuckin hilarious. Man that makes 2 beers tonite. I'm such a fuckin beer ninja, yo.
by jassu19 August 29, 2006

MAn1: bring jamal on halloween
Man2: why
Man1: he is a nigga ninja he cant be seen when we egg peoples houses
Man2: good idea
Man2: why
Man1: he is a nigga ninja he cant be seen when we egg peoples houses
Man2: good idea
by ChrisNaps April 6, 2008

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."
Bro-2: "That's a lie, a butt ninja would've never gotten spotted by a douche like you. Probably just a normal rapist."
by pokstad January 25, 2008

Someone who usually doesn't have an accent, but every now and then, an obnoxious one sneaks its way into conversation.
by RobinSparkles1983 August 16, 2010

A term used to define a person who loots the booze off of a party, then soon after leaves.
Can be used as an adj, noun, verb, or adverb if your creative.
Can be used as an adj, noun, verb, or adverb if your creative.
adj: Hey, get back here you booze ninjaing bitch!
noun: Don't let these two booze ninjas in the party.
verb: Man, I booze ninja'd some bitches party.
adverb: Hey, you guys booze ninjaingly stole my booze from my party last night!...? (Im not creative)
noun: Don't let these two booze ninjas in the party.
verb: Man, I booze ninja'd some bitches party.
adverb: Hey, you guys booze ninjaingly stole my booze from my party last night!...? (Im not creative)
by Jay Ko March 28, 2009

Guy 1: Dude I totally scored with that girl last night!
Guy 2: Really? She didn't seem that into you...
Guy 1: It was a classic ninja chirpse
Guy 2: Really? She didn't seem that into you...
Guy 1: It was a classic ninja chirpse
by Gerontius June 6, 2013

A Ninja Typo is a punctuation or grammatical error that does not reveal itself to the author (no matter how hard the author looks for it) until it is too late (i.e. after it has been published in a way that cannot be retracted).
Example : Dang! I proofread this email 3 times and I STILL managed to leave the "l" out of "turtle". That Ninja Typo just killed my chances of getting re-elected.
by Mank002 October 22, 2014
