What film starring Jerry Lewis had a hilarious scene?

Question

the scen involved a scretary typing a letter and he followed along in mime fashion to the tune of the music and tapping??

Answer 1

I guess it's "WHO'S MINDING THE STORE ?" (1963)

Answer 2

I dont remember that one but one of my favourite lewis movies is the one where he is a really rich dude who has his own private army during world war 2. He goes on this mission impersonating a german colonel. I forgot the plot after that. He staggers around and talks really goofy while pretending to be a bearded german colonel. I think jim carrey was a lot like him.