As much as people don't mean to hurt anyone's feelings most of the time, this so-called "joke" is/can be somewhat offensive. I know that people like to joke around and what-not, but this can hurt people, even if they know that you were just joking. If you use this as a joke, please be more cautious of how other people feel and only use it as a joke if the other person is fine with it, if the person is not then don't say things like this. I hope you have a nice day/night.
this happen to me sometime and it hared to explain that we now are gender jusbe becuz we aren't boy or girl dose not mean we don't know what we are it a felling :D