That can start when you read newspapers and blogs that originate in other countries. Look at these names:
“I would like to point out that though airlines routinely confiscate knives, scissors, and cricket bats, there are quite a few other potential weapons that are innocuously flying at 30,000 feet up in the air. I don’t mean smuggling a matchstick and trying to ignite your Scotch on the rocks, but it can lead to equally disastrous results when you pour copious amounts of the same down your throat.
More recently, when all the free inflight booze led to a free-for-all, with an allegedly inebriated comedian, Kapil Sharma, hurling a shoe at his colleague. Please note, footwear is also apparently yet another trendy weapon these days.”