24 Heads

Riddle: 20 people jump into an empty pool filled with water and nothing else. After, they jumped in 24 heads came back up. How is this possible?

Answer: There was 20 foreheads. Source: https://www.riddles.com/5000

20 people jump into an empty pool filled with water and nothing else. After, they jumped in 24 heads came back up. How is this possible? — 24 Heads by Lianne Riddle