No Pants Day
No Pants Day is held on May 3. It is held on the first Friday in May. This event in the first decade of the month May is annual. 
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A small campus club at University of Texas at Austin known as the Knighthood of Buh thought that dropping trousers on the first Friday of May was a humorous stunt for the end of the semester. Informal for years, promotion efforts began in 2000. The event attracted attention in other states and several parts of Canada as well as France, Sweden, Australia, Finland, and Britain.
Try to spend it in an original and within the bounds of decency!
Similar holidays and events, festivals and interesting facts
Ferret Day on May 2
Baby Day on May 2 (is the first ever statewide celebration of the first three years, when early experiences shape livelong potential);
World Password Day on May 2 (first Thursday of May);
Harry Potter Day on May 2
Garden Meditiation Day on May 3
International Grab a Boob Day on May 3
Lumpy Rug Day on May 3
Two Different Colored Shoes Day on May 3
Poetry Festival in Toulouse, France on May 3 (poetry contest of the Academy of Floraly, Toulouse organizer of poetry competitions for prizes of flowers held annually in the city, starting from the XIV century);
Brunette Day on May 3
World Naked Gardening Day on May 4 (celebrated on the first Saturday of May);
Free Comic Book Day on May 4 (Held on the first Saturday in May);
Join Hands Day on May 4
Petite And Proud Day on May 4
Renewal Day on May 4
Star Wars Day on May 4 (International observance)