Festivus

My friend told me about this Festivus Holiday.
It’s based on a Seinfeld episode. The characters made it up to protest Christmas commercialization.
He’s explaining this as he’s propping up an aluminum pole in the middle of the living room.
“Now air out your grievances,” he said.
“What?”
“Air out your grievances,” he says again. “It’s a part of the holiday.”
I can’t think of any.
So, at that point, he shouts “Feats of Strength!” and challenges me to wrestle him.
I don’t think I like Festivus.
He leaps from the sofa, screaming with madness.
I run for the door.