having sex with fat animals.
Ewww. I can't believe you love fat animals. your obestiality sickens me!
by moose123 July 01, 2011
A pun combining the words obese, and bestiality. This word can be used to piss off fat people.
No fatties. I am not into obestiality.
by Frogs_and_Peas December 23, 2007