a yimmy ghey is a fat blunt rolled with mid-grade or schwag marijuana, usually laced with other drugs or caffiene pills to heighten the effect, terminology popular in Wisconsin
My wife had a gapey after an hour of pounding my cock up her asshole.
The gynecologist could tell that her patient engages in a lot of anal sex because when the patient bent over on all fours to expose her asshole, the patient had a gapey.