Yeah I'm really curious too but I don't care enough to engage. Shit that's unexpected, I feel sorry for the guy, but I completely understand how that's really off-putting. I don't blame you, I likely would've done the same.
It reminds me of this uni mate I had, he was a metalhead and went to this metal pub one night, a couple of drinks later and he started getting really into this song next to some girl he was into. They both start headbanging wildly until his top front teeth collided with the back of her head. Shit was fucking brutal if you can imagine it.
She was out cold and they had to call an ambulance, and he was left without his top front teeth. He had amazingly straight teeth too, it was such a fucking change.
Eventually got himself some implants or some shit but it was not the same after that.