I don't know about you but they have for me (I am very much past thirty). When you're younger, your lack of life experience, especially with social situations leaves you making mistakes that are "cringe". As you get older, you get more experience, you better understand social cues that others are putting forward, and even in novel situations, you at least have some ideas how to respond in ways that, if not perfect, are at least within the bounds of social acceptability of other people.
Or maybe I find myself giving less of a shit about what other people think as I get older. Who knows?
To tie back into the thread's titular character, I don't know how you reach thirty and don't have enough experience to not say that you want someone to go pee on you if that's not your fetish.