From 1967 or thereabouts: The men of the then-popular rock group The Turtles appear in a commercial for Pepsi-Cola. A lady down the block from where I was then living used to refer to performers like these (and I think them in particular) as "Filthy hippies" who oughta go take baths and get their hair cut…and you can see that's so, so true. Why, this is from the era when rock musicians were so anti-establishment that only some of them would wear a suit and tie to a recording session…