My family lived in South Africa 30 years ago and we pined for American delicacies like Hydrox cookies. On a trip home, my wife bought ten plastic sleeves of Hydrox and packed them in her carry-on luggage. The airport security guards went wild when they saw the x-ray image and asked her what was in her bag. They didn’t believe it was cookies and had to open it for inspection. Boy, were they surprised to find cookies and not the bomb coils they looked like on the x-ray. She didn’t have that much trouble getting a frozen pizza past them.
https://www.youtube.com/watch?v=TCm9788Tb5g