about 8yrs ago when i had just started seeing my now wife, one night i drunk 3/4 of a bottle of vodka, done a gram of charlie and then in my infinite wisdom, i took 3 viagra 100's, nothing happened, so after about an hour i decided to go to bed, i was woken up around 5am with the most incredible pain in my cock, it was sooooo fucking painful i cant begin to tell you, i thought it was gonna explode. i was banging it on the door trying to get it to go down, i try a cold wet flannel, ice wrapped in cloth but the fucking thing would not go soft, we had sex numerous times it was dreadful, she on the other hand thought it was as funny as hell the cow. i was still getting extremely hard erections the following day, it weren't fun, wont be doing that again,lol.
some sunday mornings i take half a tab as a work out aid, i definitely feel the difference.