1.) When one listens to death metal or similar music that's so intense that one shits oneself upon hearing it.
2.) Putting a speaker near or into one's anus and playing death metal loudly to the point that it loosens the fecal matter inside the individual and it comes out.
"I listened to Septicflesh for the first time the other day and it gave me a death metalenema."
A holliday celebrated on February 14th (formerly Valentines day), which was invented by zeratul of giant in the playground forums. It is celebrated by listening to tons of death metal
"Dude it's Death Metal Day, and my ears aren't bleading yet, turn up the Children of Bodom!"