Ninjavitus 

A rare disease that gives you the skills of a level 8 ninja master.

Ninjavitus symptoms may include friends and family dying from sudden and uncontrollable karate chops, and the urge to carry ninja stars.

Ninjavitus by Evan Salas March 27, 2007

Ninjavitis 

A condition marked by frequently startling people on accident, such as while walking up behind or beside them to say, "Hello." Most accurately described as pervasive accidental sidling.

Ninjavitis most commonly occurs among those who wear wrestling shoes, women with small feet, and the Japanese.

Person 1: (Casually walks up beside Person 2) Hey, man!
Person 2: Dude, you scared the crap outta me! It's like you've got ninjavitis.

See also: sidler, sidle

Ninjavitis by The Cruz October 19, 2010

ninjavidual 

A person who remains very unique as his or her own individual in a very secretive way.

Man, she's such a ninjavidual. Look at the way she silently deals with OCD.

WOW ! His mysterious nature gives him an aura of ninjaviduality !

ninjavidual by Frosty August 16, 2003

Ninjavited

Short for "Ninja Invited" (see Also "Ninja Invite")

A term in on-line gaming, especially World of Warcraft. It's the process of inviting someone to join your group (party, raid or guild) without politely asking them first.

"Sorry, Honey, as soon as I logged on I got Ninjavited to the raid"

"We need someone to dps, just ninja-vite someone from LFG"

Ninjavited by Laliho August 7, 2009

ninjavitis 

1. An oral condition that causes ones breath to be so noxious that it can sneak up on unsuspecting people and be nearly fatal.
2. When the physical state of ones mouth is so repugnant that it looks like a skilled ninja has drop-kicked them squarely in the mouth.

1. I heard that John is in the hospital, cuz he went to kiss Sheila goodnight, and her ninjavitis made him go into shock.
2. god rest his soul, but ODB musta been in a fight with the RZA cause even his goldfronts had sum ninjavitis

ninjavitis by deek da biker January 17, 2006

Ninja-vitus

The mysterious loss of a tooth or teeth.

I took a bite out of my sandwich and out came a tooth! Damn you, ninja-vitus

Ninja-vitus by Lutra Tata August 21, 2011

Ninjavitis 

When someone has severe memory loss due to excess consumption of alcohol, one is said to have Ninjavitis.

"I can't remember anything about last night, had a serious case of Ninjavitis"

"I can't believe I got with that ugly bird last night, Ninjavitis strikes again"

"Mate where did everyone go last night? Oh Ninjavitis"

Ninjavitis by cass254 August 25, 2009