Top definition
The sexual orientation to do anyone, or anything.

As being compared to being an omivore - eating meat and vegitation.
Coming from Sci-Fiction - where anything could do anyone.

ex: Aliens.
Captain Jack Harkness is an Omisexual
by eberbach May 29, 2009
Get the mug
Get a Omisexual mug for your grandma Beatrix.