To stain one's pants or underwear, either from prairie doggin' or from a fart that turns into a shit.
by QueerBaitME October 29, 2009
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.
by fearthefearless June 14, 2011
by the_captain December 04, 2014
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".
by Bondi Haggis August 08, 2010