I just ignore it. If they laugh at someone like that, they're obviously dicks so I don't dignify their actions by letting it get to me (which was probably the intention - don't feed the trolls! XD)

And yeah, I had a tooth taken out like last year. It was HORRIBLE. I was sat there, my mouth wide open, and she was jerking my head side to side with pliers and I could feel the roots breaking, urrrrgh Glad I had it done though, the tooth had died so there was a big infectious lump in the gum. The bad part is, it could have easily been fixable, but the end of the bloody dentist's tiny little tool broke off right down inside the tooth. And she quoted £600 to put right something she'd done. I was like, no thanks, just take the fucker out