A dick is an abrasive and unpleasant man. A douche, whose actual definition is the cleaning of the female genitals, also means a very stupid person, and applies to either a man or a woman. Another term you might see is "douche bag". Also, you might hear "dick" expanded to "dick head". The term "douche" or "douche bag" is used mainly in the U.S. and Canada. In the above sentence, the person may be implying that they are more stupid than unpleasant. All the terms above are extremely vulgar and their use is stongly discouraged.

It should also be mentioned that these terms may be used amongst intimate friends in a joking matter. However, if you do not know the person extremely well, you should refrain from use of either word.