Makoto Dump
When you have to take a shit, but it's a very painful, spiky one, a reference to the Spiky Hair of Makoto Naegi
Person 1: "yo man, I had the most painful shit, man"
Person 2: "yo, dude, you just had a Makoto Dump"
Person 2: "yo, dude, you just had a Makoto Dump"