To be annoyed that our local park, where I've just dropped DH and DS, is literally FULL of teenagers, not talking 11 or 12 here but 14, 15 and up. They are all over the play equipment, pushing the roundabout at the speed of light so no little kids dare go near it, hanging all over the swings etc etc.
I'm not saying they are doing anything awful, but they are stopping the little ones playing on equipment that is clearly aimed at them
And we live in a small town but yes there IS stuff for teenagers, we have the sea, we have a huge, well desgined skate park, an amusement arcade, free tennis courts and basketball court and a HUGE rec ground
And yet there they are, in the littlies playground