butt lava 

Diarrhea. Not just your average diarrhea either. This is the kind that explodes out of your ass and leaves your butthole chapped for the next few days. It is a hot, burning diarrhea that smells worse than vomit. This is as bad as it gets.

I ate at Denny's tonight. I think I am going to have the worst butt lava tomorrow. I better take some imdodium.

butt lava by Absolom7691 September 3, 2006

lava butt 

The condition tha occurs when eating something so damned spicy that it burns the anal tract. "Spicy in, spicy out". Also these symptoms will arise when eating bad food or ingesting items that have been in the refrigerator for way too long (i.e., leftovers from a restaurant that is now out of business).

Hey, I'm gonna enter that 100 hot wings eating contest. Dude, you are so gonna get lava butt. Yea, but I'll win $100.

I didn't think the Christmas casserole went bad, but I ended up with a real bad case of lava butt.

lava butt by piratemaxx February 15, 2009

lava butt 

In the sercumstance when ones fart is so hot it feels as though lava is oozing out the ass.

Known to leave a hint of sulfer in the air.

OMG!!! my ass ring is so hot and I smell sulfer, I swear theres lava in my pants...ow..I must have lava butt.

lava butt by ZACH and alex October 7, 2005