Top Definition
A hybrid animal that is formed when mooses and bunnies make sexy time and their offspring procreates with an ostrich. It is a mammal that screws face to face.

Devin Parker is the only person to spot one in the wild. He saw it in Camas, WA after a long night at Jiggles.

For more information inquire at room 209 Sigma Chi Delta Zeta
Devin Parker and Ross Knutsen really got crazy with that moostrichbun last night.
by ILOVE STEPHENBRANCH March 15, 2009
5 Words related to Moostrichbun

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