mudder

One that performs well in muddy conditions, as a racehorse, athlete, or pickup truck.

A horse which runs best on a muddy track; a mud-runner.

a racehorse that exhibits a better than usual performance when the racetrack is wet or muddy.

An athlete who performs better than his/her average under muddy conditions.

A participant in a multi-user dungeon.

Eye dialect spelling of mother.

a racehorse that runs well on a muddy racetrack