Laughing inside at young people while they make all the same stupid mistakes that you did.
Looking at a nice young lady in a short dress and thinking ‘She’ll get cold in that’
Knowing stuff. Not bobbins stuff that came out of a book or a university course but real stuff. Like immediately knowing when someone is lying or being able to pick up the nicest bit of steak on the supermarket shelf in a second.
Going for a wee. It really is one of the simplest yet most enjoyable things a middle aged man can do.
Being chilled about the right things. This is my ultimate middle aged best thing. Kids are usually chilled about everything but that just cocks their lives up, *knowing* which things demand attention and which things you can ignore is a beautiful place to be.