A sex shop is a shop that sells adult products including sex toys, pornography, lingerie and fetish goods.
Most countries make it so that children cannot enter sex shops. Some require shops to have warnings outside the shop.
In the United Kingdom, sex shops must not show the products on sale inside the shop so that people on the street can see them. Sex shops in the United Kingdom are the only place where you can buy videos rated as "R18" by the British Board of Film Classification.