Definitions by Gemmily;

humding 

1. the foulest most disgusting butt wrenching smell to ever go around.
2. an ugly fat biatch (humdinger)

1. "Pwoooaaar! That girls made a humding!!"
2. "Pwoooaaar! That girls a humdinger!!"

humding by Gemmily; March 14, 2007