Pass Gas and Mustache

I came into the room with Liam straining so much so that a vein was visable. Naturally I inquired what on earth he was doing and he said " I'm trying to pass gas and grow a mustache at the same time." Well he is fortunate to be half Pierson then. The passing gas comes easily and since he is only four he'll have to wait at least a couple more years to grow the mustache.