When someone fucks so much sheep butthole that they start to resemble a Sheep-man. People who have sheep butthole-titis typically have the curse of being named Peter.
Doctor: So if you were a male sheep and you came across a female sheep would you fuck it?

Peter: Foo! I don't have to be a sheep to fuck a sheep I fuck dem already!

Doctor: Well it looks like you have sheep-buttholetitis...
Peter: So...Can I keep fucking sheep?
by Keatoburrito May 15, 2009
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