monotreme

Just as true monotreme are strange misfit animals whose parts are an awkward fit like the platypus; a mammal that lays eggs, oozes milk out of chest area with no nipples and webbed feet and bill like a duck, in urban parlance a person with a strange body that doesn't seem to fit together right like thick legs and tiny upper body is a MONOTREME

"Dude, is a total monotreme he can't run or move right and has a funny body."