This is a messitarian.
A messitarian lives in a messy moat mixed with mashed mushrooms.
A messitarian eats messed up moldy milk mixed with Mexican mushroom munchies and Mountain Dew.
A messitarian likes to visit Madagascar, multiplying in Math, Messi and Mount Pakenham.
A messitarian must mash mangos at midnight.
My messitarian messed up my mom’s marvelous mountain bike.