Surprised! Some people even wear swimming trunks for security checks.

News from the Daily Mail: Some time ago, a visitor from an airport in Malawi, Africa, wore a pair of swimming goggles across the airport security gate, causing surprises on the spot. The man, named Greg Bennettini, from Johannesburg, South Africa, had just participated in a charity swim in Lake Malawi, but he had to wear swimming trunks to the airport because he had forgotten to change his clothes. Later, they took a four-hour bus to arrive at the airport. Just after entering the airport gate, there was a security reminder that he could not fly in such a suit. But they explained that this was for charity, and the security then allowed them to pass, and the first security check they completed.
According to reports, after Greg and his teammates participated in the swimming activities, when the bus came to pick them up to the airport, he realized that he had not changed clothes. Seeing such an interesting scene, his teammates did not intend to lend him clothes, but watched him fly home in tight-fitting swim trunks.
He saw the different reactions of the passengers at the airport, and many people took pictures of him and uploaded it to social media. Subsequently, Greg was asked by the police and asked to wear clothes. Greg's nearly naked home journey improved his reputation for charity swimming and successfully raised £2,000. This is really a special airport security check!