the Fonz's version of "piss off" or "screw you" and countless other negatory response variations.
(really kinda racey for it's time)

i never really thought about what it literally meant when i was like 5 yrs old. but seeing the reruns now i'm like OMG WTF?!?!? does he really want everyone to sit on his... um, motorcycle? heheh.
Ralph asks if he can borrow Fonzie's leather coat to impress a chick. Fonzie then replies in jest
"Sit on it!"
<live studio audience laughs>
by e-fu December 19, 2003
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to hold for an extended period of time.
i'm going to up my prices on these shrooms and just sit on it, ill make my money in the long run.
by j-breez March 23, 2009
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Used as a phrase.

It means to sit somewhere and think about the idea you have or to shut up and think more about what you are going to say before you move on to what you're going to say.
Me: Hey Fonz can I get some..
Fonz: Sit on it Kami.
by Kamisama May 30, 2005
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Used in reference to sitting on something in a sexual manner. The phrase first came into being during an episode of "The Girls Next Door" when Hef's new twin girlfriends were doing a sexy tennis photo-shoot. Both were holding tennis racquets and the photographer asked them to do something different. One person who was watching the show shouted, "Sit on it!" in reference to the girls sitting on the tennis racquets in a sexual manner.
Photographer in show: Ok girls, now do something different with the tennis racquets.
Guy 1 (watching show): Ya, ya, sit on it!
Guy 2 & 3 (sitting next to Guy 1), stare at Guy 1 in utter amazement, disgust, and intrigue.
by soundwave February 28, 2009
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1. A gaming term used to let another player know he has just been owned, or is inferior.

2. Take a seat (as in step down)
Player 1: I'm gonna own you like a noob!
player 2: (*Frags player 1*) sit dude.
by Raz January 16, 2003
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Ones place during a heated conversation, disagreement, or general communication. An individual doesn't necessarily having to be sitting down. Describes an individuals state at the time of communication
You ain't going to sit there and tell me you didn't lie on me.
Jessica gon' sit there and tell me she didn't steal that money from me.
Dude just gonna sit there an do nothing after he was hit.

I called the store regarding the wrong merchandise and the customer service representative I spoke to sat there and told me something dumb.
by uptwnxs April 18, 2017
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the occupying of an area by a large group of protesters, effectively blocking an area off to a particular person or people until removal by force or the achievement of the goal (popularized in The U.S. by the Civil Rights Movement)
The sit-in made more sense than burning flags.
by The Return of Light Joker November 16, 2010
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