let's k-nock k-nees

...and the loopiest bit of that loopy film The Gay Divorcee is Let's K-nock K-nees
I agree that it's gloriously goofy - ( see footnote) and had to watch it three times to appreciate the full loopiness.
Yes Night and Day is "pure seduction" but a bit of the gloriously goofy never goes astray in the weak knee stakes.

You can hear a sample of the song here.