Hey, No Fair!

Riddle: A magician was boasting one day about how long he could hold his breath underwater. His record was 6 minutes. A kid that was listening said, "That's nothing, I can stay underwater for 10 minutes using no type of equipment or air pockets!" The magician told the kid if he could do that, he'd give him $10,000. The kid did it and won the money. Can you figure out how?

Answer: The kid filled a glass of water and held it over his head for 10 minutes.

Source: https://www.riddles.com/index.php/316

A magician was boasting one day about how long he could hold his breath underwater. His record was 6 minutes. A kid that was listening said, "That's nothing, I can stay underwater for 10 minutes using no type of equipment or air pockets!" The magician told the kid if he could do that, he'd give him $10,000. The kid did it and won the money. Can you figure out how? — Hey, No Fair! by Anonymous v1.

Riddle: A magician was boasting one day about how long he could hold his breath underwater. His record was 6 minutes. A kid that was listening said, "That's nothing, I can stay underwater for 10 minutes using no type of equipment or air pockets!" The magician told the kid if he could do that, he'd give him $10,000. The kid did it and won the money. Can you figure out how? Answer: The kid filled a glass of water and held it over his head for 10 minutes. — by Anonymous v2.