National High Five Day is 4/20/06
Andy Towle of Towleroad: "Interestingly enough (as pointed out to me by Cyd Zeigler at Outsports), the high five was invented by baseball player Glenn Burke in 1977. Burke was the first ball player to declare his homosexuality (in 1982, after his retirement). Sadly, he died of AIDS in the mid-90's. Said Cyd, "And to think all of these straight guys are just doing what a gay man taught them in 1977!!!"