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1.
A fat, short tart 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'.
Oh man! Look at that Plumpa lumpa Dave's picked up!
by sketchy October 10, 2004
 
2.
A fat man who dresses up in bright orange. He is obese and women are repulsed by his site. He dresses in bright orange to get attention.
Look at that fat plumpa lumpa over there. Looks like he has to pay women to keep him company.
by salvatore vitale's son's mot December 24, 2008