Sex:3

I feel like an outsider at school because most of the things people find funny is sexual and I don't get it or it's very gross. One day I was in class and this girl said something sexual and the other girls laughed. I stood there staring at them with my head tilted to the side like a dog. The girl who told the joke, turned to me asked "Don't you get it" I shook my head no. She sighed and said you are no fun at all. Then she explained it to me and I told her that's inappropriate to say about females. She just told me to get the f*** out of her face... I don't see what I did wrong.