After a sporting event; when your teammate is washing his hair and his eyes are closed, someone sneaks up behind him and checks his oil with their thumb (quickly slips a thumb in his ass), then runs off before he is able to rinse the soap away and identify the clandestine violator
After the game someone gave John a rusty ninja. John was attacked by a rusty ninja after the game. Be careful, there's a rusty ninja in there.
by sandy_x December 4, 2012

Somebody who always seems to know where everybody is at all times, even when huge amounts of effort have been taken to ditch them.
Originates from the way in which they travel mostly through the rafters, so as to stay out of everyone's awareness like a ninja
Originates from the way in which they travel mostly through the rafters, so as to stay out of everyone's awareness like a ninja
Person 1) Wow... I can't believe it, we managed to ditch Barfield. Now to spend some quality time with the amigos without jokes being undermined etc.
Barfield) *sprints along rafters like a Shinobi, darting from the shadows with unprecedented stealth* Hey guys, what are you all doing in town? You told me you all had the plague... You weren't tryin to ditch me, were you?
Person 2) Jesus, you're such a fuckin' rafters ninja
Barfield) *sprints along rafters like a Shinobi, darting from the shadows with unprecedented stealth* Hey guys, what are you all doing in town? You told me you all had the plague... You weren't tryin to ditch me, were you?
Person 2) Jesus, you're such a fuckin' rafters ninja
by Andy Hutchings January 13, 2008

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

When you run really fast into a room and close the door because you imagined that a ninja was chasing you or some other sort of danger approached. Generally used to prepare for a future ninja attack.
by 007hippo September 29, 2009

Bill drank too much last night. He ended up ninja chucking his beer all over the bathroom.
I just ninja chucked so hard I punched the wall.
I just ninja chucked so hard I punched the wall.
by Geistsoul13 October 13, 2012

the art of sporting socks with thong flip flops, which in fact look like the traditional footwear worn by Ninjas
at first glance he looked like a geek with his socks and flip flops on, but wait...don't ninjas wear stuff like that, he could know karate... he does have Ninja Toes!!
by nevets eural September 5, 2010
