The first thing anyone wants to know when they learn a language is usually the bad words. It is important if you want to understand people at their worst. For example, the refs for the World Cup match between England and the USofA did their part to brush up on how the players would be taunting each other. But as practical as learning the swear words has become, we still have our limits as to when we can use them. It’s just that those limits are fading fast.