LumaDooma Share definition Flag A girthy bulbous round penis resembling the shape of a Luma from Super Mario Galaxy. Not to be confused with the more rectangular cousin, the chode Brett: yooo, I heard the new guy on the team has a huge LumaDooma Trent: Brah, no kidding! let's hook him up with Cavernous Coochie Chloe LumaDooma by Vark50 June 27, 2020 Get the LumaDooma mug.