Go on. You can finish this one of yourself

This is probably the worst thing to say to a woman in bed. I've only said it once.
Oh god she deserved it though. I remember just getting so bored of her  poor sexual skills. I'm not great in bed myself. Just not enough practice. But I make an effort and I always want a woman to climax. She on the other hand was...well....lazy. Never made the effort. I think she thought sex was just fucking or something. Her idea of foreplay was what a man did.

I admit a degree of anger but more frustration. I suppose it's just a lack of my communication skills.

But I wonder what she told other people? I wonder if she told any of her female friends about what I'd said. I never told her she was crap in bed so she'd have thought "Go on. Finish yourself of" was said out of male
 laziness or something.

There's a time when a girl I loved who was a friend of hers looked at me awry when I made a joke along the lines of "Go on. You can finish this one off yourself" referring to a joke I couldn't be bothered finishing. Now she may have looked at me funny because she was amused by an off the cuff comment that made innuendo out of a normal phrase that could be mentioned in the office, or perhaps my ex-loved one had told this person what I'd said.

There's this thing called Theory of the Mind. It's interpretation of people's intentions often based on little gestures. Apparently schizophrenics have poor ToM. I stay away from attempting to interpret these little tells because they're not explicit. I'd like to ask the person I joked with but whose reaction to the joke I couldn't interpret but I don't trust her and she doesn't value me.

It's a shame because I'd like to know. Really just for a blog piece about a "How good are you in bed?" mobile phone application of the future. It's relevant because gossip becomes formalised using this sort
 of application. Imagine people could rate their partners and other people could access these. After all, we can rate companies and products. Why not public ratings of people once the technology matures?