A fat, shorttart with an orange face. Plumpa lumpas can often be spotted rolling across the dance floor of cheap nightclubs but are considered harmless if all eye contact is avoided.
Origin: Umpa Lumpas from 'Charlie's Chocolate Factory'.
A plumpa Lumpa is a fat short girl who usually dresses in orange. A Plumpa Lumpa Sandwich is when a fat short girl dressed in orange squirts onto some bread and u use her fluid to eat eat a sandwich as if it were mayo.
A woman who has put on a few pounds since the last time that a random 72 year old Uncle will say to Larry, the cousin twice removed, this kind of thing:
Uncle: "Golly! That's Suzanne? She has gotten to be a real Plump Sister since the last time I saw her."
Larry: "Must've been back in the Seventies. Before the kid. Kids. Who knows."
Uncle: "It was May 1979. When they got married...wow she just blimped out!" Larry: "Total butterball. Plump Sister, shame."