Gaseous Rex Share definition Flag Someone whose farts are so foul and lethal, they can kill more people than a raging T-Rex. Oh no, Gaseous Rex just had Mexican food for lunch. Better get outta here before we get a whiff of his lethal stench! Gaseous Rex by LonePooper January 27, 2018 0 0 Get merch Get the Gaseous Rex mug. Buy Now — $32.95 See more merch