A Person, Place, or Thing that reminds you of the dirty ring of poop/dirt/dead skin that lays in a nasty toilet right around the area where the water hits. The idea of this person, place, or thing may conjure a strange and ugly facial expression referred to as THE POOT MELON DANK RANK GLARE. Most commonly compared to the advanced stages of the STANK FACE.
Molly just sits up here and talks about Tommy all the time. Gahh she is such a Poot Melon. Like gu-ross.
Rebecca is a big ole nasty Poot Melon
Oh, don't go to that party. Their apartment is a Poot Melon.