There are a number of phrases built on the word “put”, such as put by, put for, put across, put over and so forth. The expression“putting one on”is among them. You tell a person something that he finds difficult to believe, and he may look at you closely and ask:“Are you putting me on?”He does-n蒺t think you are serious. Perhaps, you are joking with him, teasing him, try-ing to test his reaction(反应).The expression “putting one on”is closest to the phrase “to put one over on a person”, meaning to trick, to de...