I don't say that as a joke. But I kind of wish I were.
I'm going to call her K for the sake of confidentiality (and for the sake of no one I know ever finding this since she has a pretty unique name).
I work at a local grocery store. I started back in February right after graduating high school, as a cashier/bagger on the front end. K was my boss, and was the front end manager/head cashier. Sometimes she could be really nice, other times she'd be a complete b****. More often than not she was a b****, actually. Johann used to work for her a few years before I started working at this store and had tons of problems with her (maybe it was conflicting personalities? Hahaha...) She acted really different around younger employees or customers with young children, which I found odd.
And I wasn't the only one seeing it. There were fellow cashiers calling her Sybil or Jekyll and Hyde or just claiming that we had a bipolar boss.
In June the store asked her to transfer off the front end into the appy department (aka the deli). We don't really know why, possibly complaints about she wasn't very nice often and she didn't take advice from other associates very well. So she is now the appy manager (deli and hot foods). Long story short, a few weeks ago I asked to transfer to the hot foods department of the store while doubling as a cashier (my week is split between the two departments) because they DESPERATELY need help over there.
Unfortunately this meant going under K as my boss again, while the new front end manager is soooo much nicer.
K hovers over me when I work now. Sometimes she compliments me, other times she tells me I'm an idiot or have no common sense. The other day when I was making chicken salad, I swear she was talking to me in a more childish way and enjoying working with me again. I found it odd. Tonight I told her I had spit all of the chickens for cooking tomorrow morning and she gave me an almost child-like happy response before going back over to the deli. I still found that odd.
A few months ago a fellow cashier, who used to be a counselor, told me that K once told him (not as a counselor, while he had been working there, so it wasn't confidential) that her father and brothers has abused her a child (how much, I don't know). Thus why she dislikes working with guys and seems to resent a lot of the women she works with. So I figured my fellow associates and I might not be off-track on the whole split-personality thing. Thing is, she doesn't seem to have amnesia or anything, she's extremely organized, considering she's a department manager...
For now I guess all I can do is keep an eye on her. Depending on what mood she's in, at least I'll know whether to talk to her or to stay faaaaar away from her, haha.