I would like to pose a question, that's mostly on topic.
What does everyone think maturity actually entails?
I think that there are two main parts: Responsibility and Situation Awareness. People can still be mature even if they make crude jokes, bug their friends with annoying antics, say weird things and more, so long as they realize that such things aren't appropriate in certain locations and with people they don't know well. Likewise, there's a limit to going too far in those kinds of situations, which is where the responsibility portion kicks in. Cleaning up one's own mess, fulfilling obligations and not ruining things for others is the crucial part.
From my experience, there's the idea that if someone is mature they can't have a good time, or that some who is mature is inherently boring.
Anyone else have anything to input?