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two and a half rotations (a nine-hundred degree turn). usually this is done as a trick on a skateboard, bmx bike, or with in-line skates. if you're really insane, you'll pull it off in a car.
the first 900 on a skateboard was done by tony hawk.
by d-shadow January 14, 2004
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Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
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2
A bunch of bitch ass niggas who say 9 bc it’s the time they got to go inside
Yo fuck 900 them some bitches
by Fuck 9 February 01, 2018
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3
an extremely difficult trick done on a skateboard where you do a mute grab and just spin backside until you don't even know which way is up. it's actually performed by adding a 540 to a 360; you have to wind up for the 360 while spinning the first 540. people don't realize how insane it really is.
tony hawk had to go the the chiropractor often while trying to learn the 9.
by karl July 10, 2004
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4
A group of soldiers that stands on they block everyday and get that money.they the realest coming out of south APOPKA.
by 900gang June 14, 2019
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