Do you DUDD ?

Do you DUDD? Oh, you're not familiar with this acronym? DUDD is "Department Unification Dress Days". What does this mean? It means that on certain days, all members of a department are encouraged to be dressed in a similar manner. Our history department has the following DUDD's: Tuesdays is "Tie Day," Thursdays is "Hawaiian Shirt Day," and Fridays are "Khaki Slacks Day."
All members of the history department at my school are male and 80% participate in DUDD's on a regular basis.

Does your department or school DUDD ?