Usain Bolt won the gold medal in the men's 100 metres and these people on Twitter were very observant about what just happened.
But in all seriousness, just look at this guy. Here he is in the semi-finals (which he won, obvs) running and smiling at his lane neighbour Andre De Grasse. He doesn't even look like he's trying.
And here he is in the final, celebrating (with pure swagger) before he'd even crossed the line - which he did in an incredible 9.81 seconds.
Then when he was acknowledging the crowd during his victory lap and apparently not looking at the big fluffy microphone on the ground in his path, he just majestically leaped over it - like it was the easiest thing in the world.
There's only one possible explanation.