A mix of piss and jizz. After youve been doin smin with someone and then you take a piss this opaque yellowish mix comes out called Kwanch. Can also be used as an insult...
- Dude i was soo turned on this morning that when i went to piss i kwanched!

OR

- Euh your such a Kwanch!
by 5quidman August 3, 2010
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Mix of jizz and piss
Dude, i fucked a chick then i pissed but i kwanched all over the toilet!!
by Gheyman August 3, 2010
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