1. You're never too old to laugh at farts.
2. I normally don’t enjoy making people laugh.
3. Parents may not even realize they are doing it - such as laughing only at one child's jokes - Or letting them get away with things that there siblings can't.
4. This place is a dream. Only a sleeper considers it real. Then death comes like dawn, and you wake up laughing at what you thought was your grief.