Top Definition
to produce yeast

your mom has yeast coming out her twat.

you stupid yeaster, go pound good cuntrotte
by ihatefagpunks August 09, 2003
The experience of finding the remants of a Monistat egg on one's penis, after post yeast infection sexual intercourse.
"Yo, Ashley had a raging yeast infection on Thursday night, so she put the egg in, and then when we fucked on Friday morning, it was straight Yeaster.
by BATEMANNING December 21, 2014

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