I got on the BART on Monday at SFO and there was this older-looking, baldingish guy wearing all black that was talking to someone who was very excited to be talking to him.I sat across from him, and he kept looking at me in a "I-know-you-recognize-me" kind of way… except that I didn't. He talked to this other kid about being a musician all his life, and going back to school, and teaching philosophy, though it sounded like he was still in whatever band.The kid who was talking to him name dropped "Master of Puppets," which made me think this guy was in Metallica?? But this dude didn't look like anyone in Metallica. So, then I thought maybe his band recently TOURED with Metallica?If you have an answer to this riddle, I'm dying to know. I will send you a trophy and a box of cookies if you figure it out!*UPDATE: My boyfriend wishes me to note, that the band was also local to the Bay Area, and that the guy wasn't so much bald, as he had "longish aging rock star hair."