a slang term for ketamine, more commonly known as special k. i'm not totally certain, but most likely the term comes from potassium's symbol on the periodic table being k.
person 1 - come over to my house tonight, and don't forget to bring the potassium.

person 2 - sure thing, man, and i won't forget it. we're gonna get so fucked up, i already know it.
by SPACE DEMENTIA September 15, 2007

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Another word for jizz/spooge/ejaculate
"Oh dear, my little Jimmy has made potassium stain on his sheets again!"
by Marduk November 25, 2006

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Another way of calling a dumb guy a caveman/monkey man. Because we all know monkeys eat a lot of bananas and bananas have potassium in them. So, that big dumb hairy guy you know may be here-in known as a potassium.
If Klinger from MASH wasn't so sharp, he would very easily be a potassium.
by Dylan Hewson May 30, 2005

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