This is something that happened quite some time ago, but I didn't have a blog back then, so it here it goes. I'll just refer to the person I talked to as Joe. It's an ICQ conversation:
Joe > What's the best PHP Template parser?
Me > PHP itself
* Silence for about half an hour *
Joe > Where can I find PHP itself?
Me > php.net
Joe > Yes that's PHP, I'm looking for PHP itself
Me > huh?
Joe > Or did you mean something else with PHP itself? I thought you meant that the name of the template parser was 'PHP itself'.
Me > D'oh!
Believe me or not, this is a true story...