leg lamp in the window 

Something that you are very proud of, but no other person is impressed by, often an accomplishment, story, or item. The definition stems from the movie, "The Christmas Story" where Ralphie's father is extremly proud of his major award ( a lamp in the shape of a woman's leg), but no one is impressed as he is.

Person 1: My dad tells everyone that he was in the audience for Letterman, he doesn't realize that people don't care.

Person 2: Yeah I noticed, it's his leg lamp in the window.

leg lamp in the window by MCUD December 31, 2010