A condition of tightness or numbness in the testicles that is felt after fully inserting them inside another person's anus for a prolonged period of time. The intensity and duration of buttballs is dependent on several factors, including but not limited to the size of one's testicles, blood pressure, tightness and dilation of the host's anus, and duration of insertion.
"Damn Tone, you dunked yo nuts in that bitch's ass for over 20 minutes! You must have a serious case of buttballs."
by yaolinglingjiu October 17, 2011
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Similar to "jerk" or "turd". Anatomy: combination of butt and balls.
by Aquamom December 18, 2016
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When a man fully inserts his penis into the anal passage (male or female) and rest his balls on the gluteus maximus thus the formation on buttballs occurs.
(Exp.1)Man George, You were so drunk last night Alex T. got in that ass so far he gave you the worst case of buttballs ever and left you a rash. Here is the picture.

(Exp.2) BITCH SHUT THE FUCK UP BEFORE I GIVE YOU BUTTBALLS!
by B & J July 31, 2006
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The act of inserting testicles into an anus, sometimes one's own.
"Hey Joel, it's Chris. I got this porn you have to see, it's called 'Guys Who Buttball Themselves.' Call me back! Later!"
by Jesse Martin February 11, 2005
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it’s a ballsack but on youre ass, and can be also be a insult
hey ya bloody cunt you look like walking with a buttballs on your ass
by karendicksucker December 31, 2020
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