I think "curse" words are nothing more than a phycological way to infringe on our right to speak. Subconsciously, we think they are bad, so we don't use them. You can say make love, sleep together, making babies, bumping uglies, doing the nasty or having sex, but if you drop the f-bomb, oh my golly you are swearing. Think about all the "curse words" you know and I'll bet you can think of words that mean the same thing but they are socially acceptable. Mind control.