WARNING! There will be swearing in this blog post.
In most English conversation schools there are a few things you aren't allowed to talk about....sex, politics, religion and of course....don't teach your students bad words. I am quite lucky in that most of those rules don't apply to me as my boss is very liberal. I don't teach my young students swear words. I don't normally teach my older students (adults) swear words either... though over the course of 12 years, I have.
The thing is there are lots of things that my students are curious about that frankly, aren't in any text book. Once, a class of ladies (all in their 60's) asked me to teach them bathroom English....yup....all about bowel movements, passing gas (and they wanted the slang) etc. That was fun! Another time, one of students (also a woman in her late 60's) said that she had been watching a TV show and a celebrity was being interviewed and they wanted to know what her favorite swear word was. My student was curious because when the woman said the word, there was no explanation in the Japanese subtitles. Turns out the word she was curious about was "cocksucker". Yeah....just about spit my tea out when I heard that one!
I also remember when one of the sweetest little ladies (again, in her 60's) I have ever taught blurt out in class that her crotch hurt.....I now totally forget what the topic was about but I remember teaching her to say something else as that would be surprising to hear!
Explaining these kinds of things to adults is fine albeit, embarrassing at times but today I walked into a class and a 13 year old boy wanted to know what "fuck you" meant. Ah..... He then proceeded to say "shit" "goddamn" among other things. I told them (there was class of 4 kids watching carefully as they knew something was going on) that these weren't things they should say. He then turned to his friend in class, flipped him the finger and said "fuck you". I asked him where he learned these things. From a friend. They wouldn't let it drop. These are good kids and I love this class but I certainly don't want their mothers thinking I'm teaching them these things. So, I asked my boss (who, obviously can tell them in real Japanese) to tell them these are things they shouldn't say etc. He walked into the class and the kid asked him about "shit"....my boss said that it means "unko" (poo) and then told them to not say these things in class. I thought it was settled but when that kid didn't get perfect on his test, he looked at me, snapped his fingers and said "shit"...just like a Canadian would!