Championship belts exist for boxing, wrestling, and apparently obliterating someone's guest bathroom plumbing beyond repair. Massive Dump Division implies weight classes, which means somewhere a lightweight is clogging toilets with remarkable efficiency.
The Details:
Arched distressed white block text reads "UNDEFEATED" above a white top-down illustration of an open toilet bowl with "DUMP" on its base, containing a brown poop emoji-style pile, flanked by yellow stars and blue water splash droplets, with "MASSIVE" and "DIVISION" on either side. Below, white block text reads "TOILET CLOGGING" with cursive white script reading "Champ" underneath.