I was always a good kid. People in public always commented on how polite and well-behaved I was - but when I got home I must have been a holy terror b/c my siblings still think I'm a brat.
I say at least once a day that I can't believe the kids in my neighborhood act the way they do. Acting like that wasn't even an option when I was little.
Hellions.
I was in a restuarant getting food to go once and there was this large man sitting in a booth alone, eating his meal. This little bratty girl sitting close to him with her mom said REALLY loudly "Why is that man only eating a salad?" and her mom said "Maybe he's on a diet."

how rude! THEN the little girl said while laughing "Well it's not working!!!" Then the mom got all red and didn't say anything. It still makes me mad and it was about 4 years ago.
I've yelled at brats on my street for jumping (on purpose) in front of my car as I was going down the street. One little girl stood in front of me and put her hand out like she could stop me. So I honked at her and yelled at her. I was expecting a visit from her parents that night but they never came down.
I kept having a problem with this little boy climbing over my fence and climbing over it again to get in the neighbors back yard. He broke my gate. I told his dad (who is a state trooper!) and he said he'd take care of it. It happened again. I called again and he said it wouldn't happen again. It didn't happen again.
I've seen kids playing with my mailbox before and over xmas break, they broke it off by hanging on it. UGH!
They used to hit my car with baseballs on accident when I was standing right out there near it. I told him not to let it happen again and what do ya know... it happened again. So I went inside and called his mother and he got called inside. He scratched my neighbors truck by riding up beside it and scraping it with his handlebars. My neighbor didn't do anything. I told him I was standing outside when he did it. He didn't want to cause any problems.
Ok I'll quit ranting now.

Whew! That felt good.