The event in which a straight man trips over onto a penis, with the penis entering his mouth.
Adam: "Mate are you okay? You look down."
John: "Not really... last night I totally mosued, it was embarrassing."
Adam: "Eww that's sick!"
9π 4π
Somebody who smells like a fishy fanny and is gay. Fact.
Noun: A Holy Motherfucker that opened your mom's anus.
Dude called Mosus is a pervert