Heacock said that people had noticed that the first quickdraw on Tapeworm was badly grooved, but didn't feel compelled to replace it because they didn't expect to fall on the 5.11a climbing.

Heacok说，人们之前就已经注意到Tapeworm这条路线上的第一把快挂已经严重磨损，但是没有人觉得有必要去更换它，因为他们自认不会在5.11a难度的攀爬中坠落。

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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.

BBC: Kentucky 'kicks ass': Taking pride in plain speaking

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.

BBC: Kentucky 'kicks ass': Taking pride in plain speaking