Stefon Diggs guilty of NFL's dumbest move of Week 1 and it may have decided Commanders loss to Eagles

But then Diggs showed everyone perhaps the reason he's playing for his fourth team in four years when he completely lost his mind after the score. Diggs, you see, celebrated his first touchdown with his new team by jumping on the goal post.

It's an old Antonio Brown celebration from more than a decade ago.

The NFL calls it using the goal post as a prop which is against the rules. So Diggs was immediately flagged for the foolish move.

"As soon as I wrapped my arms around it I was like this: 'Oh I forgot,'" Diggs told reporters at his locker stall after the game. "Back in the day, you know, I've been playing a long time, you used to could do that.

"So, update on the rules and sometimes when you've been in the game a long time, uh, I got to be better."