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1.
A Magic Mushroom (Psilocybin mushroom)
An Ogre
A Leprechaun
Any Object or random thing seen on a mushroom trip

Nweeerump can be said backwards as well. (pmureeewn)
Jill: What is that? (pointing at a dwarf crossing the street)
Jack: oh don't worry. its a nweeerump.

ALSO

Teacher: How was your day?
Dom: Nweeeerrrruuump!
by Tittytoucher12 May 10, 2010