Recently, my friend told me she would like to paint a series oil painting about dirty things. But in this project, she will try to make the ugly things pretty. They have a poster show today ,then I made a poster for her. When she back from school, she told me her classmates thought she used a wrong word. They thought dirty and pretty has the meaning of sex. I felt very sad, when people saw a poster ,they didn’t say anything about the composition, the colour, the idea… They just talked about the word we used. I really had no clue about the correct word that we use to say things not clean. Is this the cultural differences between two different area of the world? I still have no idea about which word is the correct one.