Running your mouth after a night of drinking Maker's Mark whiskey - or more broadly, any sort of uninhibited oral activity due to alcohol consumption.
Girl: "Last night I was running my Maker's Mouth, for sure!"
Guy: "Tell me about it, you were talking mad trash after drinking that bourbon!"
Guy: "Tell me about it, you were talking mad trash after drinking that bourbon!"
by mahlk May 14, 2010