886: I'm honestly not sure what to make of that comment....inappropriate though! I don't think that's cute or funny AT ALL. I would not honor her stupidness with a 'witty retort' back, which may encourage manager to make her think this comment is acceptable - it's NOT.
I take this sort of thing seriously, and I've hurt by one with a mindset like your manager. I'll share: I worked in a lab and my supervisor would not allow me to perform a certain laboratory function, which needed to be done and I offered to take on this responsibility, because (direct quote), "You will become catatonic." In reference to my enhanced senses, autism. I said nothing.
Later, this woman became, in all respects, an out-of-control witch with me as her target. So I think it's vital this kind of behavior be amended NOW, not later. Address this RIGHT AWAY with her supervisor and document what happened, with specifics.
Good luck. I stayed strong and never resorted to my supervisor's stupid pettiness, which is why I prevailed. Your situation sounds potentially....scary. I am sorry she felt justified in saying this to you. You do not deserve this, and certainly not in the workplace. Unprofessional.
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The ones who say “You can’t” and “You won’t” are probably the ones scared that you will. - Unknown