NFL star penalised for terrible celebration

There's celebrating a touchdown, then there's this shocking effort from Pittsburgh's William Gay.

The Steelers cornerback was clearly excited following a pick-six against the Cincinnati Bengals, dancing and hugging teammates for minutes after the event.

His efforts didn't go unnoticed by the referees, who penalised him for unsportsmanlike conduct.

Gay's celebration fail features in our best and worst of Week 14:

How does it compare to these other sporting celebrations gone wrong: