system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are things funnier when I'm not supposed to be laughing?

Example, I'm at my work desk almost in fits reading a post (colleagues giving me shifty eyes starting to notice) but when I go to the toilet and continue reading I am no longer finding it funny.
gpt
It's social pressure. It's considered inappropriate to laugh in a social setting that demands silence, so your brain is spending more effort maintaining decorum.

Because it's trying to maintain order, anything that is absurd and humorous will become even more funny as a result of that. It's like your body's natural way of trying to calm you down because you're being too serious.