Sometimes I have these freaky dreams..?

In my dreams sometimes I have . And it's not regular but the best that I've ever had. I wake up and I have basically given myself an . Is this weird? I haven't done anything in 9 months since I broke up with my ex so I don't know if I just need to get laid or what. And why have I never had it that good before for real. I spent thanksgiving with my mom and shared a bed with my sister and it happened and I know that I get a little loud, but I was so embarred when she woke me up. She didn't say anything but I think I was humpung her leg. I was totally mortified. Has this ever happened to anyone else, or am I just a weirdo?