People with friends, colleagues, relatives or in daily interactions or more formal occasions, when it comes to some of the hidden parts of gender behavior, reproduction, droppings or body, they always avoid using foul language saying and use neutral words instead, to make communication both sides to avoid distress。 With the continual development of human society, although it is no longer “talking about sex”, but in some formal communication occasions, people say some sex-related words, in addition to part of the medical term, people usually use “make love”, “sleep together” such Euphemism to denote sexual intercourse。 “Toilet” is the everyday life of the common language; English “toilet” also has a variety of Euphemism。 “May I please be excused”? or “May I please leave the room”? If the argument can also be compared with humor at a familiar friend’s home: “I'm going to do my business” or “I'm going to my private office”。 In the work place it can be said: “May I use the facilities”?