1 definition by Setti

Mud Onion

When one is discharging excriment (or phecomatter), and its odor is so foul it makes your eyes water.

Tommy was in the restroom doing a number 2. When I walked in my eyes began to water from the odor in the air. I asked if he was planting Mud Onions.

by Setti July 11, 2008