33 year old fogey here.
I hate it when the neighbor turns his radio up loud and I get the bass. He turns it off by 10 but I am in bed by 9.
Also, don't call my house after 9 unless it is an emergency. I am usually in bed by 9, if I stay up til 10 I am useless without coffee the next day.
Also, the other day, I caught myself telling my daughter "if your friend jumped off a cliff would you, too?"