A fungus that infects womens' vaginas, causing them to produce a cottage cheese-like substance.
I ain't gonna fuck my girl coz she's got a yeast infection.
How does not using toilet paper make you a slut?
The wild Poul: yeasty is for feasty!
Can be used as a noun or as an adjective.
Person 1: "hey! check out that person over there"
Person 2: "oh man... YEAST!!!"
Person 1: "ey bro did ya see that chick i was danc'in wif in da club?"
Person 2: "fuk bro.. she was yeast"
*ugly person walks past*