I've got some absolute belters...
I remember starting a funk / rock band with a drummer I had met locally. We put up an ad explaining who we were and what we were looking for in a guitarist. I definitely remember putting "No metal guitarists", let's put it that way.
I get a reply from a guy around our age and he seemed enthusiastic. Have you played any funk before I asked him - "Loads of times" was his reply...
He rocked up to the audition, we tuned up and I announced we should jam for a bit to loosen up. Before we started, he interrupted and asked if he could play Master of Puppets for us... I looked at the drummer and said sure.
What came next was two minutes of the worst MOP I have ever heard. I thought he was having us on but he was dead serious! He finished by saying he was now warmed up and ready to go. The drummer looked on the verge of tears trying not to burst out laughing.
We sent him on his way and that was that.
Fortunately, our next guitarist audition went really well and he was invited to join the group.