Stallocaust 

A public bathroom stall rendered un-usable from a plethora of feces, urine, and toilet paper distributed across the toilet, floor, and walls.

Mike: “Dude, I just witnessed a stallocaust in the 4th stall, don’t go in there.”

Jim: “Wasn’t me.”

Stallocaust by danterrycol December 5, 2011

Anal Smellocaust

When the smell of a person's ass is so bad that you would rather kill yourself in a gas chamber that experience it.

Becky's ass smelled so bad that it reminded me of the Anal Smellocaust. ass anal smelly holocaust

Anal Smellocaust by Assmuffins June 17, 2015

Snailocaust 

Putting a large amount of snail bait, glass powder or snail chemicals on your lawn/garden resulting in a large amount of snail deaths.

"Jeez...after you put down that snail killer stuff there's been nothing but dead snails everywhere; like a snailocaust."

Snailocaust by cheflane April 5, 2009