I have seen 5-6 cases of people doing this ( Worked in the ER wheni was in the Army) couple ended up ok after we gave then a shot to lower there erection. I rember one person lost the ability to ever get an erection again, had 2 who suffered a sprained penis and couldnt get an erection for 4-6 months. The rest just kept passing out due to lack of blood ( people who dont need it keep the erection for many times longer then people who actualy need it) or were realy light headed.

This was 2 years ago and its "sopose" to be safer now but I personaly would never try it.