According to the late Roger Mellie (that bloke off the telly) "Gaseous Clay" is the name given to flatulence assisted stools which, due to their high air content, float like a butterfly on contact with the water in the toilet pan. unfortuately, as they have a high exit velocity, they also sting like a bee
"I'm not eating sweetcorn again, It gives me Gaseous Clay"
by cheezy geezer December 29, 2004
Someone who farts consistently and violently, resulting in knockouts to anyone who chooses to enter into their ring.
Brandon is so lactose intolerant that whenever he drinks milk, he becomes Gaseous Clay and ends up clearing out the room.
by Snocap September 26, 2006