From AFP via Yahoo News:

BRISBANE, Australia, (AFP) – Hundreds of airline passengers suffered disruption to their travel plans when a major regional airport was shut down for an hour after a humming and vibrating adult sex toy was mistaken for a bomb.

The vibrator was discovered at 9:15 am (2315 GMT Sunday) by a security officer who checked out a suspicious package inside a rubbish bin at the terminal cafeteria of Mackay Airport in the northeastern state of Queensland, a police spokeswoman said.
…
She said in retrospect the humming sounded exactly like a vibrator – but it was better to be safe then sorry.
“You can’t afford to take chances,” she added.

You can definitely afford to leave your vibrator at home or at least make sure the batteries are taken out.

I think it would be funny / very interesting to have a day when there are vibrators going off in nearly every airport. That would be one of the best Culture Jams ever. Hmmmmm, Buy Nothing Day is coming up…