A short, fat, green haired organism possibly the result of a female leprocon and a black male midget having unprotected sex. (This isn't rare in most cases)
Willie wont pay for the Umpa-Lumpa's DNA test to find out who da fuck his daddy is...
A short, most of the time orange, person that works at a chocolate factory. Can somtimes be very large and annoying, every once in a while will break out into phunky phresh beats giving puzzles and detailing the rights and wrongs of working at a chocolate factory.
Also a nickname for a short chubby kid wearing an orange shirt
"man did u see C.J. he looks like a total Oompa Loompa wearing that orange shirt"
"nah man an Oompa Loompa breaks out into funky fresh beats sometimes 2"
" ya man he beatboxes 2"
"whoa C.J. must be an umpa Lumpa then"