They took a Harry Potter toy off the market once parents discovered the reason they couldn't get their kids to put them down was that the vibrating broom was like one huge vibrator between their legs...
I had something similar happen to me, thankfully before 9/11. I was returning from a trip, forget where from, and I was called out of the plane to explain a noise that was coming from my suitcase. It was my battery operated razor: apparently it got shuffled in such a way that it got turned on when the airport peeps were loading it into the plane.
Even without Batteries the Dildo could be mistaken as a pipe bomb by airport screeners. But wait, wasn't it a guy that had the toy? Maybe it was a cup vibrator, or whatever it's called, instead.