Butt oyster

This can happen after long night of beer drinking ,when you try to crack off a fart and get a warm jelly surprise in your asscrack,the texture of an oyster

Guy one: (makes strange facial expression)
Guy two:what's up dude?
Guy one:dammit man I gotta go,I just squeezed out a butt oyster
Guy two:hahahaha...hey this muthafucker just shit himself!