Yep, that SingSong Phenomenon is covered in the tribology manual, too:
Who knew? Old Guylius was a renown physicist AND astrologer, too (a real renaissance man). In the chapter titled "Uranus and Black Holes: Their Impact On the HHW Time Space Continuum," Guylius discussed his theory of "The Relativity of Interest" which found, "That when you're bored at work, you'll find HHWers fascinating as hell, but if you're having fun on vacation, well, you'll find HHWers boring as hell (i.e. work)."