As funny as it may seem, it isn't funny to someone that has had to replace their mailbox, not to mention that it is a felony.
May future players find a double lined and disguised concrete mailbox one day. Then you can explain to the police why your forearms are broken in the middle of the night, while the nurse explains about pain making you humble. I have made this happen.
It doesn't make you an asshole at 40. It makes you an asshole when you commit this senseless crime of vandalism, kinda like tagging stop signs and fences. Senseless, mindless, assholio. It ranks right up there with molesting small animals and starting fires.
I clean all of the tagging I see in my 'hood. I find no humor in it.
I also did not partake in such acts as a youth. Integrity is bone deep. If you stood here in front of me and told me you, personally, in your youth had bashed my mailbox, I would definately lighten up for you. It wasn't cute when you were 15 and it isn't cute now.