Friends say dirty things about me?

I don't know what it is, all my friends, boys and girls alike say they want to do sexual things to me. I hardly hear jokes about other people. No, I don't get flustered over it, I just can't get it out of my head. Some girl friends talk about me, wishing that I become their whore or stripper. Some guy friends say that they want to gag me and the such. I find it awkward, I'm not sure if this is the usual friendship experience. Is this normal?