I used to compete in the 100 meter dash in college. Did you run track?
No, I did not. Did you enjoy it?
Yes, I wanted to be the fastest man in the world.
I admit I don't have a lot of knowledge when it comes to competitive running, however I did enjoy watching Usain Bolt run. 
Yes, he was awesome. I can't believe he held records for the 100 and 200 meter.
Yes, I still remember the first time I saw him run. He knew he had it and slowed down to celebrate before he made it past the finish line and still won by a huge stretch. 
Many he is widely consider him to be the greatest sprinter of all time.