Acrobats, Short Shorts & Potato Salad

I'm not sure why or how or to what purpose, but this amazing clip was presented to me today. Aside from the immaculate hairdos, can I suggest you limber up, stretch your arms and legs and settle in to watch this fabulous feat of acrobatics from 1944:

(note: still unsure what potato salad has to do with anything. Watch it til the end - exit stage left never looked so good!)