I always thought it was a hickory massage...
Also called a hickory shampoo, in refering to unwashed hippies. I first heard it in reference to the riots at the Democratic Convention in the 60s.
Not that I was alive back then, just that I'm a student of history when it comes to hippie beat downs. They give me a warm, fuzzy feeling that says "Everything is gonna be OK in our world after all".
And those big Magna-lite flashlights were known as "hippie bashers".
“Not that I was alive back then”
Well, I was (still remember ole Dan Blather getting knocked on his can) but my observation had more to do with events/terminology on “the strip” than those at the Democratic Convention.