By Olivia Wheeler Britain’s Got Talent fans are convinced they’ve figured out Bobby Goldfinn’s identity. During the latest episode, a contestant called Bobby Goldfinn, who wore a goldfish mask, attempted to tell jokes to judges Simon Cowell, Amanda Holden, Alesha Dixon and Bruno Tonioli. However, Bobby Goldfinn kept forgetting the punchline because they’ve got the memory of a goldfish and they received four red buzzers from the unimpressed judges. Joking about the audition, Simon said: “Well, the good thing is you’re going to forget this ever happened…” Yet later on the show, it appeared Bob…