Comedian Dave Hill is a heavy-metal fanatic, and man, does he love him some Judas Priest. So, when the opportunity came to interview the band’s lead singer, Rob Halford, for a magazine, he was determined that this encounter would not stop with the Q&A. No, they would have such chemistry that Halford would want to be his best friend until the end of time. And this fantasy stayed alive right up until a fateful trip to the bathroom that brought these two men together in a way that pretty much ruled out dual vacations. Watch Hill tell the story in this installment of “Pop Culture Memory Lane,” Vulture and the UCB’s series of animated recollections of people’s collisions with their pop culture obsessions.