To flip someone's backpack inside out, insert all the books/stuff back in it, zip it back up, and hide it somewhere. This is a great school prank to your friends.
John: Yo where's my bag?
Steve: Not sure, but Alex told me you got ninjabagged so good luck.
Flatulence occurring in the presence of another or others that requires "hands-free" manipulation of the anal sphincter to expel the gas in silent undetectable manner.
I was having fun driving you guys to the ice fishing expedition until someone released a ninjafart. Too bad it was SBD, or it may have gone completely unnoticed.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.
After school, The Modells on Jamaica Ave was active. Respectfully.