As someone who jogs off and on (and by jog I mean run 10 feet before getting exhausted and retreating to watch more Netflix), I've heard that it takes a TON of time, pain, and energy to train for and win any sort of competitive foot race.
A British runner named Laura Muir had just won gold in the 1500m European Indoor Athletics Championship and was ready to take off on a friendly traditional 'lap of honour' to celebrate her achievement when a 'spoilsport' of an official did everything in her power to ruin the fun.
Side note: while I'm no fan of flashy arrogance, there is NOTHING wrong with taking a quick victory lap. If seeing someone else work hard and win bothers you, then you should probably reevaluate your priorities in life. I've heard that this particular event was running late, hence the official's attitude, but that really isn't the runner's fault or problem. The quicker you let her take her lap, the sooner the event continues.