It's not exactly unusual for players to get booked for their goal celebrations.
Taking off the shirt, jumping into the crowd - these are all offences that are likely to get you in the referee's book, and as every player knows the rules, it seems fair enough.
There are other occasions, though, when it gets a little more confusing. Take Denny Antwi, for example, playing for IK Start.
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The Ghanaian striker had just scored his first goal in the top flight of the Norweigan league, the Tippeligaen. That's a pretty momentous moment in any player's career in itself, especially as it gave his side the lead against Lillestrom.
You can't blame Antwi for celebrating - running over to the corner and sliding on his knees. One fan clearly took exception to this, however, even if it wasn't a particularly outrageous celebration.
The fan in question ran onto the pitch and hit out at the player - but that didn't mean he was getting any sympathy from the ref. In fact, all he got from the man in black was the wave of a yellow card.
Moment of madness
Take a look at the bizarre incident here, courtesy of 101GreatGoals:
Antwi had gone seven league appearances without scoring, so he certainly wouldn't have been expecting things to turn sour quite so quickly when he eventually did find the back of the net.
This is football in 2016. It's a mad, mad place.
As you'll have heard him say above, he didn't mean to provoke the fans, and even if he had, he probably wouldn't have seen such an extreme reaction coming - from the disgruntled supporter or the referee.
Was the referee right to book him for celebrating near the fans? Have your say in the comments.