We all use euphemisms. We ask for directions to the "ladies room" or convey the news that someone has recently "passed away." In fact, euphemisms have existed throughout recorded history: they are used by preliterate peoples, and have probably been around since human language first developed. And the same is true of offensive language, or "dysphemisms"--words used as weapons against others, or as release valves for anger and frustration.
In this...