Fred Astaire & Ginger Rogers in Follow the Fleet (1936, dir. Mark Sandrich)
Ginger Rogers - We’re in the Money (via Gold Diggers of 1933 OST)
At a certain point, Rogers seems to be singing gibberish - she is actually singing in Pig Latin. She had sung the song so many times during rehearsal that she began singing it in Pig Latin to relieve the monotony & amuse herself. Director Mervyn LeRoy liked the sound of it, so he had Rogers sing the last part of the song that way.