Bad words are called bad usually because they stand for something profane, rude, crude or ill mannered. The problem is that one person's rude may be another person's funny. … Talking about some names of body parts as if they are off limits for appropriate use is not uncommon.  There are some people who use it to insult others, so actually it's  the intent of those people to insult and hurt others … that is bad,  not the word.    Lard is a solid shortening made from pork fat; what you have left  in the pan after cooking bacon.