The word first appeared in our literature and the history of the place is the "Water Margin", at the time was used foul language. Bird's pronunciation is diao third tone, meaning the male reproductive organs. (^ ^ This estimate is very surprising, but it is a fact, huh, huh)
QQ chat now where we often use this word, here meaning depends on context, see the chat of their relationship, but the effect That is the curse words, of course, if your relationship is good, we can see each other a familiar mantra. (Our bedroom the girls like to use the word hello ~ ~ ~)
