In your opinion, what is the bitchiest profession? Or in other words, where do you think the bitchiest people work?

I was making an appointment at the hairdressers last week and the girl taking my details seemed to be new as she was apparently not putting the information in the right place, the girl next to her kept sighing and pointing at what she was meant to be doing and at one point I caught her rolling her eyes completely behind this girls back. I thought it was a bit harsh and totally inappropriate to be doing in front of a customer - if I get annoyed with someone when I'm at work, I have the decency to mask it!

When I actually went to get my hair done in the same hairdressers a few days later, I felt a bit nervous around all the women like they were silently judging me. The girl who cut my hair was nice enough though verbally judging me on my bad hair ( use straighteners too much, I KNOW) but in a....'nice' enough way. The girl who washed my hair was making conversation but I wasn't really feeling it. I didn't really want to talk to her too much because she seemed like she honestly couldn't give a fuck either way.
I wouldn't want to go back there because I felt like a lot of the girls working there were pretty bitchy.

So, where do the bitchy people gather to work in your opinion?