She told me I was acting too y?

This evening out of nowhere my mum just started criticizing me for acting y all the time. It was the most random thing I'd ever seen. She started gong on about how I put on a y walk, a y voice, and a y attitude? (Ooook..) I have no clue what she's on about because I haven't been trying to act y. How do I supposedly "stop acting sexy?" no mean comments please, I have no clue how to react to this. If anyone knows what she's talking about please tell me.