AIBU to want to leave my job?

[ImperialBlether]

I have a new line manager who calls us "guys" and tries to make us high five her.

I can't go on.

Oh, no. HATE that sort. Does she also set up 'nights out' down at your local karaoke bar?

I just can't be doing with enforced jollity. She's from a PE background (we work in a college) and maybe that's what they do there, but I can't be doing with team building when I'm really, really busy.

Why the biscuit? Is that acceptable behaviour from my boss?

Much better than having a bullying boss. You are being very unreasonable
Enjoy the ride whilst it lasts.

Soon she will call you hun...