A standard scale from 1 to 10 used to judge how hyper, loud, or energetic someone is. When out with friends for the night, and someone is being exceptionally loud and annoying, they are "on 12".
Lucy: Is Maria coming out?
Mike: Yeah but that bitch is on 12 tonight!
by TheDarkFlower January 18, 2008
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A day that is significantly luckier than 11/11/11 that everyone should expect to make their biggest wish on.
12/12/12 is much more lucky than 11/11/11!
by dwightonmac54 November 11, 2011
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The date that comes after 12/11/12. Has no real significance in the way we live our lives.
Person 1: Do you know what the date is!?!?
Person 2: Wednesday?
Person 1: No! It's 12/12/12
Person 2: No, I'm pretty sure it's Wednesday.
by Skitzophrenic December 12, 2012
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Masturbating or ejaculating 12 times in 12 hours.
Dude, last night Bobby was challenged to the 12 in 12 challenge and he accepted! His dick's gonna fall off!!
by Tigs978 December 2, 2009
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The lighting schedule for growing marijuana indoors. 12 hours of sunlight/12 hours of complete/uninterupted darkness.
Just finished the veg cycle, now its time to change from 16/8 to 12/12 in order to determine the sex of my plant.
by amp9041 January 2, 2006
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a 12 for 12 is when you have sex for 12 hrs straight. A 12 for 12 can either go from 12 am to 12 pm or 12 pm to 12 am.
I met this girl and craziest thing we went 12 for 12 homie.
by WestCoastKing03 July 14, 2022
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