look up any word, like lemonparty:
 
6.
A nickname or descriptor for a woman who doesn't clean her vagina to the point where yeast infections along with many other diseases and crotch-rot are simply assumed.
"Man, she was really bakin' a loaf of bread down there.
Yea, I bet it was a loaf of sourdough."

"That bitch, Sourdough, gave me a UTI. :<"
by FailureChild August 28, 2006
 
1.
a true or veteran Alaskan
"He's a real sourdough; he hikes, fishes, kayacks, and loves could weather."
by Dana Mix August 17, 2003
 
2.
When your forehead looks like its been jizzed on allll over.
He fell asleep and he had the worst sour dough face. TG
by Blumpy McBlump March 22, 2006
 
3.
What a woman's fingers or hands smell like after having sex. However, they do not smell like sour dough if she has only been masturbating herself (this is an important distinction to make).
"Oh yeah, if I'm just masturbating myself, uh, then why do my fingers smell like sour dough?!"

(Upon having received a high-five from someone who just "got her some of that"): "Sniff, sniff, sniff... sour dough?"
by Troy Bulletinboard January 12, 2012
 
4.
A group of 7 or mor gay men, stand in a circle with a piece of bread. The first man jizz's on it and passes it to a random person, so on and so forth. The last person who gets the breat has to unload his special sauce on it, and then eat the bread himself.
Wow man, that sour dough lastnight was epic. I cant believe Eric ate the whole thing!
by Chuckie!!! August 17, 2006
 
5.
When a girl puts her yeast infection pus in a man's mouth as an act of sexual intent.
I sourdoughed my girlfriend yesterday, my tongue turned yellow afterwards.
by Darkninja October 14, 2012