“Viagra increases bloodflow to the penis, but what drug increases bloodflow to the brain?”
I had been partying with this girl a few days in Rio, just kicking around doing stupid things when we both decided we needed to leave town. This girl had a wicked sense of humour and could really throw down for a party like no one else. She was heading South and I was heading North. I was looking at a 18hr bus ride and while we caught a cab there I realised I had no drugs to help me sleep. She nicely offered me a couple of blue "Valium" tablets. Not even thinking, I washed them down with a beer and jumped on the bus.
After about an hour, I realised I was still very much awake despite the drugs, and I had this crazy, unexplainable hardon. It was then that it clicked that she had given me a couple of Viagra instead of sleeping drugs. To this day, I don’t know if it was an honest mistake or she just had an amazing sense of humour. If I didn't happen to have a small child sitting next to me, it would have been hilarious. She got me good. That was not a fun 18 hours.