Muddy Bum
When someone doesn't wipe their ass after taking a massive dumparoo. The easiest way you can tell someone has a muddy bum is by seeing shit-stains on the rear of someone's pants
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Related Words
Muddy Bum • muddy • Muddy Buddy • Muddy Lizard • Muddy Puddle • Muddy Waters • Muddy Rudder • muddy beaver • muddy helmet • muddy love