A deadhead referring to police in the area. It was created in the late 80’s on Grateful Dead tour. The “Six” in Six up refers to the 6 points on a sheriffs badge. NOT number of lights on a car as later thought.
Grilled cheese, what the fuck, It’s just a buck!

Dude, six up, put the food away. They are busting kids...
by Kindguyryan June 24, 2018
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To cross the street, especially in a hasty or rapid manner.
by Matt_K August 4, 2005
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When someone says "six up", it means the police are nearby, so whatever you are doing that is illegal you'd better hide it.
This phrase is most commonly heard in parking lots at Phish concerts where many people openly sell or use drugs, or illegally vend food or beer. "Six up!" is used to give people a heads up when the cops are coming around or when there is an undercover cop trying to bust people.
by Bob Williams May 30, 2003
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Refers to police being in the area -- refers to the lights on the top of the car (six lights)
"Psst! six up, shut up!"
by Mcdizzle May 19, 2008
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A lesser gypsy soda pop, flavored of wheat and corn.
Six Up; the lowly brother of the now famous Seven Up.
by Ba77er November 10, 2006
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A lesser gypsy soda pop, flavored of wheat and corn.
Six Up; the lowly brother of the now famous Seven Up.
by Ba77er November 10, 2006
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A hand gesture/expression in which an individual makes two back to back sixes with their hands (similar to the "okay" hand gesture, with the thumb and pointer finger touching and the other 3 fingers sticking straight up).

There are many uses of the expression/gesture.

"Throwin' your sixes up" can be considered similar to the middle finger, but slightly less offensive.

It is typically used by and individual to show that they thing something is wicked or sick.

Also, it can be used by an individual to show that they don't care about something.

The origin "throwin' your sixes up" is associated with the number 666.
"Dude I'd throw a six up to that song"

"Some lady cut me off and I just threw my sixes up at her"

"That party was awesome, all the kids were just throwin their sixes up"

"Why weren't you throwin' your sixes up? That lady's a bitch"
by thursdizzle November 18, 2009
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