Why are all black people so quick ?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

When does a USA Potato change its nationality?

How can a man go eight days without sleep?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

What does a man do only once in his lifetime, but women do once a year after they are 29?

What kind of band never plays music?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

I can be cracked, made, told, and played. What am I?