look up any word, like bootylicious:
1. U. D.
U. D. is short for Urinal Dysfunction. Much like "E. D.", it refers to a specific performance issue.

Urinal Dysfunction is the inability to pee is public when surrounded by others peeing.
James, suffering from U. D., suddenly couldn't pee after waiting in line for a urinal to open up.
rss and gcal