The fat that is stored in the abdominal region is classified as

Visceral fat

Explanation:

Visceral fat is one of the types of body fat which is stored in the region of abdominal cavity. The visceral fat is located near several vital organs that are found in the visceral region. Such organs around which the visceral fat is located are liver, stomach and intestines. This fat sometimes also gets build up in the arteries. “Active fat” is a term which is often used for the visceral fat because it actively increases the risk of some serious health problems.

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.