While the NFL has moved away from the “No Fun League” days of excessive celebration penalties for pretty much anything choreographed, some celebrations can still lead to flags. Chiefs wide receiver Xavier Worthy evidently crossed that line on Wednesday.

Here's why Xavier Worthy received a penalty flag for his touchdown celebration during the Chiefs vs Steelers game on Christmas Day.

Rookie wide receiver Xavier Worthy scored on a 7-yard touchdown reception from Patrick Mahomes, and his celebration afterward was deemed to be unsportsmanlike. The penalty made Butker’s PAT a 48-yard attempt, and it was no good.