I think adults behave better when waiting. They usually have more patience and self-control compared to children. Adults understand why they need to wait and can keep themselves occupied by reading or using their phones. They have more experience in managing their emotions, so they tend to stay calm and composed during long waits.

Sometimes, children can behave better when waiting. They often find creative ways to entertain themselves, like playing games or observing their surroundings. Some children are taught good manners and patience from a young age, which helps them wait calmly. However, their behavior can vary depending on their upbringing and personality.

It really depends on the situation and environment. Both adults and children can become impatient during long waits. Cultural factors and individual personality traits also play a role in how people behave while waiting. Some adults might lose patience quickly, while some children might remain calm and composed, depending on these factors.