I remember Dingo's 'three-legged' ads in the mid-70's, though I never did understand their point.

The only remotely significant reference I find in this ad is "...start off on the right foot..."
but that's quite a stretch.

The ad is disturbing all on its own, but if you add that nasty compulsion to chop people's heads off from a few years back,
this ad is right at the bottom of the heap.

DumbAds reader Andrew M. noticed,

"...since when did a "pair of Dingo boots" become three?"

Thanks, Andrew!