My neighbors' kids. The ones who own "That Dog" (proudly featured in a previous avatar of mine) have a high school-aged kid who hangs out on his front porch from the time he gets home from school (or playing hookie) to the wee hours of the next morning with his friends yelling and talking loudly. Sometimes they end up in my yard. Word round the neighborhood is that his parents had tried everything and can't control him.
I might go through public records and find out when he turns 18, and then I'll taser him, drag him out of sight, and beat the ever lovin' shit outta him.
As for the (around) 8-year-old across the street from the other kid, I don't know. I already told him to not come around my domicile and he's complied. Now if he'd only shut the f**k up across the street.