Marilyn has a blonde moment in Some Like It Hot.

Sugar: I come from this musical family. My mother is a piano teacher and my father was a conductor.
Joe: Where did he conduct?
Sugar: On the Baltimore and Ohio.

Today’s Bad Joke Cracker was brought to you by the letter:  U

NB: The letters in our Crackers will add up to the anagram of a Classic Christmas Movie Title by 31st December. Send us the name of the movie to movietalk@ipcmedia.com before midday on 4th January 2012 and we will enter you in our prize draw for a Treasure Trove of Goodies.