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 24, 2007
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The act of having sex with or wanting to have sex with fat people or a fat person.
Jeff:
Has Mike ever been with a skinny chick?

Dave:
Nah, he practices obestiality.
by Bassnium.exe February 14, 2011
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Ewww. I can't believe you love fat animals. your obestiality sickens me!
by moose123 July 1, 2011
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Similar to bestiality but with obese dogs...
Karl committed real obestiality when he fucked that 200 pound rottweiler.
by Disgusting Human December 2, 2020
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