Happy turkey day is a slang expression for wishing friends and family a happy Thanksgiving in an unconventional manner, referencing the central highlight of the holiday; a turkey meal.
Thanksgiving has been a national holiday in the United States since 1789, celebrating the first harvest of pilgrims in America in 1621.
The “First Thanksgiving” was celebrated as a festival for three days, attended by 53 pilgrims from Europe, as well as 90 Wampanoag tribesmen.
The first documented case of the phrase “happy turkey day” emerges in 1956.
“Happy turkey day” has been in use for over half a century in America, mostly by fathers and grandfathers attempting to refer to the yearly holiday in a humorous and unconventional manner, jokingly expressing that the holiday doesn’t truly consist of anything but eating turkey.
“Turkey day” was first written about on Urban Dictionary in 2003.