I once had this annoying ex-boyfriend that wouldn't leave me alone. He'd email me all the freaking time the lamest stuff to get my attention. Most of it was incredibly weird and didn't make sense so I just deleted it. One day, he sent me this odd poem that didn't make sense and I'm not sure if it was supposed to be funny or sweet. I forwarded it to my friend to laugh about it and she emailed me back saying he was a pathetic loser that needs to be medicated ASAP. Or so she thought. She actually managed to click on his email address in the body and forwarded the forward to HIM.
I should mention that this is the same friend he tried to hit on while we were together and she turned him down. From that day onward, she was a big catalyst in our breaking up. A good thing, since it turned out he had been cheating on me quite a bit.
The next few weeks the emails went fast and furious. Him vs. Us. It was a big old trainwreck that you couldn't look away from and no one seemed ready to block each other. Every issue from our entire relationship was aired out and my friend was quick to provide hilarious commentary. It did prove to be very therapeutic though.