Top Definition
To have sex with an absurdly obese person. See: diabetes; bestiality.
John: "Did you see Bill's new girlfriend? She's gotta be at least 500 pounds!"
Joe: "Yeah, I heard he's into diabestiality."
by nnattt August 03, 2013

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.