Guns, knives and explosives don't always have common shapes or sizes. Some are designed to evade detection, and airport screeners must be vigilant.

So when staffers using an X-ray scan at Berlin's Schonefeld Airport couldn't identify a mechanical device in a bag on Tuesday morning, they called police and shut down the D Terminal due to "suspicious content in a luggage piece", the federal police said, according to CNN.

Sex toys were found in luggage at Berlin's Schonefeld Airport. Credit:Wikimedia Commons

The bomb squad arrived, and an announcement went out over the loudspeaker asking the gentleman with the multiple unknown objects in his luggage to please step forward and explain them.