Yea, I've had personal experience with fat girls(guys too, but to a lesser extent) who awkwardly bring up a sexual topic during a conversation. They always seem like they have no experience in sexual things because their descriptions or correlations just make no sense.. Kind of like the one picture that was on fph a while ago of a girl saying the feeling of her fupa on her thighs when she slept was "orgasmic". It's like, I don't think you've ever had an orgasm if you think that compares..