I was a little asshole until my younger brother was born, I've seen some of the video tapes my parents made, I honestly don't know how I didn't drive them to murdering me and burying me in the back garden
I know they smacked me on occasion (and seriously, I've no idea how they only got pushed that far a couple of times) but evidently it worked - I stopped being a brat and that was that. Again, I don't know if it's something I could physically do but then I'm sure my parents thought the same before they had the child from hell