If I can travel through time and space, I must plant a durian tree in front of Newton's house.

The beauty of this joke is that if Newton is hit by a durian tree, he will at least be in pain, and the extreme point does not rule out the situation that he will die after being hit.

In fact, many jokes are based on the pain of real or fictional characters.

See how stupid others are, and then you feel superior.

This is also the reason why I generally don't like so-called art forms such as cross talk and sketches.