An internet holiday on every third of March. You refer to yourself in the third person.
Say your name was John.

"John ate dinner."

"John went to the doctor."

"John is celebrating Talk in Third Person Day."
by bhavik15 November 5, 2009
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Facebook examples of "Talk in Third Person Day":

George feels sleepy.

George is contemplating the meaning of life.
by skywalker89 March 3, 2010
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