Magma Mud 

The product that comes when person A gets anal really really rough by person B, so hard that person A may have gotten some minor cuts and/or tears of the anus/rectum. Then person B discreetly grabs a bottle of rubbing alcohol and douses person A's anal region, causing pain and anguish while purposefully trying to get the majority inside the rectum.

"dude i heard that chick ended up with some magma mud the other day"

"no way, that's sick"

Magma Mud by kavik_ November 20, 2009