A fictional holiday from Seinfeld.
FRANK: Many Christmases ago, I went to buy a doll for my son. I reach for the last one they had - but so did another man. As I rained blows opon him, I realized there had to be another way!
KRAMER: What happened to the doll?
FRANK: It was destroyed. But out of that, a new holiday was born. "A Festivus for the rest of us!"
Thanks Karl.