It's like lying on one's résumé.
I once got a résumé from a fellow claiming to have done a job I did when I was consulting to another company. I called the chief engineer for that company and asked who that was. He said, "Oh, that's so-and-so." His name was pronounced much differently than it was spelled.
I invited him in for an interview. He walked in, saw who I was, turned around and left. Heh.