...sex with my girlfriend? When I pulled down my pants she looked at me and said "ummmmmmm..... I'm not going to be able to do that. It is way too friggin' huge!" Upon measuring it I found it to be 13 inches. I always knew I was a little larger than most, but I don't think it is too big for someone to have sex with. I was wondering, what is the average penis size? It is also 8 inches around. Is that pretty thick? Also when I get an erection, I have to turn down the heat in my house, because the heat generated from my erection is like a small fireplace. Is that normal? Please only serious answers. I need to know!!