So during last year’s Super Bowl halftime show, Prince unleashed his much-talked-about phallic display:Which prompted one blogger to post recently, Tom Petty, begin plotting your subtle phallic symbol now.And if you saw the opening to Tom Petty’s halftime performance this evening, you know he succeeded — the headstock of a huge, lit-up Flying-V guitar gliding purposefully toward a big, red, waiting heart … sorry to say I don’t have any photos handy, but I’m sure one will make the rounds soon enough.UPDATE — See what I’m sayin’??: