A fork of Rural Dictionary
The act of having sex in a hot tub with a menstruating woman. From the show The Detour.
"I searched the web and found the following for sweaty lava..."
When you have sex with a girl in a hot tub on her period.
I found out Suzie was on the rag, so I took her to the hot tub for some sweaty lava action.
The act of having sex in a hot tub with a menstruating woman.
We just performed Sweaty Lava, it was gross.