ScottyB, I know exactly how you feel. Some years back when I got my first Duke-900SS-I took it round to my ex-partners to show her and her boys since she had asked me to. I went in the house, boys went out to see the bike-I think you can guess the rest................
When I went back out there was her 11 year old trying to pick up a 900SS-which he swore 'just fell over'! Like you I had to walk away-I could have killed the little ****,-especially since he was the main reason we split up.......
She was mortified and wanted to pay for the damage but I wouldn't let her.
Bit different to your circumstances. I would be careful with the baseball bat, tempting though it may seem-but paint stripper and a knife in all 4 tyres should even things up a bit-especially if it gets done away from the house...........
John