Pluto?

Interesting conversation occurred at coffee time in the doctors' room today. There were 4 male GP partners and myself in the room, and 2 of them were having a long and involved conversation about the practice nurses, and problems that keep erupting with them and communication issues. Here is how it went:-

Partner 1: "What you've got to remember is that men are from Mars, women are from Venus..."

Partner 2: (pantomiming a secret nod towards me) "Careful, there's one in the room. And she's got pregnancy hormones...watch out!"

Partner 1: "No that doesn't count; she's a doctor."

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So where am I from? I'm confused.