I have had this happen twice. I tend to tence up a lot before hand and sometimes I forget to breathe, especially if I'm really into it. The last two partners I was with told me a friend of theres died this way. He just blacked out and dies from lack of oxygen to the brain. I could understand if he had a stroke or something, but can you really starve the brain of oxygen in that short period of time? can people really die from a hard core orgasam?