When I was 19 years old I traveled to Germany with my sister and her friend, and we went on interrail around Germany. In Heidelberg I bought a butterfly knife for myself on the Main street off a grumpy German man, who would know a since humor if it sat on his face.
I had always wanted such a knife ever since I saw those cheap Kung Fu movies and Hollywood cop films, where the gangsters had these cool butterfly knives and whipped them around their wrist in supercool ways. I had a friend in school many years before who one of these knives and we sued to practice using it. The problem was that these types of knives were banned in Iceland and you could import them to Iceland.
My problem now was to get into the country, and through customs and the police. I thought long and hard about this and eventually I decided to but it in my backpack, hide them in my really dirty and smelly white socks, and them put the disgusting white socks on top of the opening of the backpack, so they would be the first thing that the custom officers would see, should they pull me aside and search my bag. The point of it was to make them not pay attention to my socks.
So when we arrived back in Iceland, I collected by backpack from the conveyor belt and headed on through customs. I tried to look normal, but then they came and pulled my aside and asked to search my bag. It was a woman customs officer with a shitty attitude that started searching my bag and sure enough she let the disgusting sock be, and them she searched all the sides of the backpack, at the bottom and scrambled around in the middle. She found nothing worth finding and let me pass into the country with my butterfly knife. Dirty, smelly and disgusting white sock can come sometimes.