Today I learned about the three types of fun, as categorized by outdoorsy folks:

From comments on Reddit:

There should really be a type 4 fun. Things that are fun at the time but you regret later, like being mean on the internet

Type 3 fun is actually enjoyable for others when you share those stories.

As a Vet I can say that the army is an expert in providing Type 2 and Type 3 fun while advertising Type 1 fun.