Greeting cards by lovedart.
Just to add to this with a bit of science, I went to a lecture on swearing once, and we were provided with a diagram of the brain. Swear words are, indeed, stored in the limbic system (the parts of the brain that deal with emotion). That’s why when we experience a shock, be it touching something hot or being given a surprise gift or having to suddenly swerve, we tend to swear on reflex. Just as an animal might mewl, we swear, because it’s the best audible sign of shock our body can produce, and the one most likely to make our emotions evident to other people, and hence receive help if we need it.