Chiefs' Xavier Worthy hit with penalty after touchdown, sparks fan frenzy

The Kansas City Chiefs got the scoring started early in their Christmas Day game against the Pittsburgh Steelers on Wednesday afternoon.

Rookie wide receiver Xavier Worthy caught a 7-yard touchdown pass from quarterback Patrick Mahomes, and the Chiefs went up 6-0. 

Worthy appeared to do a Christmas-themed celebration with his teammates, then lifted up his shirt.

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NFL officials penalized Worthy for the play. But fans were confused as to why the flag was thrown.