It is usually used as a put-down, obviuosly. It does not mean that you should not have any self-esteem. Sometimes people use the phrase because they are unable to come back with an objective argument, or sometimes because they are ignorant.
Father of Kevin, Jenvey and Maddie. Being alienated from Maddie due to the fact that after her mother divorced me and remarried she cut me out of my daughter´s life. I then rekindled my relationship with the mother of my boys and since then Melissa is hell bend on allienating and abusing Maddie