What can I do about these really delusional immature little boy children at my job?

They think so highly of themselves and its ironic because they are so beyond worthless to any woman its not even funny. One of these individuals keepa saying my name in a high pitched duck voice. I want to finally turn to him and say Grow up. But he's an oversensitive manchild. He can't handle any truth.
What can I do about these really delusional immature little boy children at my job?
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