International Talk Like a Pirate Day is a parodic holiday created in 1995 by John Baur and Mark Summers of Albany, Oregon, who proclaimed September 19 each year as the day when everyone in the world should talk like a pirate. It has since been adopted by the Pastafarianism movement as an official holiday.
The holiday resulted from a sports injury. During a racquetball game between Summers and Baur, one of them, in pain, said, "Aaarrr!" and the idea was born. The game took place on June 6, 1995, but out of respect for the observance of the Normandy landings, they chose Summers' ex-wife's birthday, as it would be easy for him to remember.
So, now we know!
