To stain one's pants or underwear, either from prairie doggin' or from a fart that turns into a shit.
Linda tried to fart but stooned her pants instead. I told her, NO STOONIN' ON THE BAYOU!
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A girl with a birth defect of the female anatomy, which causes the vaginal lips to expand up to five times of there original mass.
Golly! her vagina lips are that of a stoon.
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To calm down or to chill the fuck out.
When someone is bitching and whining about something and you just want to tell them to shut the fuck up, instead, you tell them to "stoon down".
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