However, Heacock notes that it only began to appear in print regularly from about 1975.
BBC: Kentucky 'kicks ass': Taking pride in plain speaking
"Before Nixon, you could pretend that people in high positions wouldn't use words that way, " says Heacock.
After this initial foray into the mainstream, Heacock observes that usage of "kick ass", "kicking ass" and "kick-ass" picked up even more frequently from roughly the year 1990 onwards.
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