2 definitions by Frank Enbeens

Top Definition
1. When you have to take a shit really bad and it comes out as a runny burst.

2. Having sex with someone in the anus and having a lot of fun in the process.
1. That asshole Matt left an assblast all over my toilet!

2. We had a real assblast at the party last night. Matt's ass is going to be sore for a week!
by Frank Enbeens May 12, 2007
1. A condition caused from gay anal sex where fecal material runs down the back of the scrotum.

2. A condition caused by fecal material in your pants that is pressed into the scrotum.
1. After Dave pulled his cock out of Matt's ass, he noticed Matt had poopynuts.

2. Matt shit his pants while stalking people in his truck. He then said to himself,"Great, now I've got poopynuts!".
by Frank Enbeens May 12, 2007

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