First of all that's a pretty poor analogy. Why would you make fun of someone for skateboarding but not say, playing in a softball league or pick up basketball as an adult? BTW, when you were 5 you played tag with your friends because it was FUN, not because it was "cool".
If playing tag was one of your favorite things to do would you stop doing it because you were afraid of what other people would think? If so I honestly feel bad for you.
I bet if you could get a group of adults to play a game of tag without any of them worrying about what their peers would think of them they'd have a blast.
My work regularly schedules kick ball games where we play against one of our clients and everyone has a great time (of course booze is involved - and now that I think about it, a game of drunken adult tag would probably be hilariously fun).
You should try taking that stick out of your ass before it gets stuck so far up there you can't get it out. Or of course you can continue only participating in socially acceptable activities that adults are "supposed" to do, while the rest of us enjoy our lives on our own terms.
