Persistent earworm alert LXXV

If this isn't an earworm, I don't know what is.  I imagine almost everyone has gone through something like this: You're reading a thoughtful article about the dangers of climate change or an email recommending an informative, moving documentary.  Incongruously, one of the silliest lyrics ever written or sung enters your mind and won't leave.  In my case, the lyric that kept repeating itself recently was, "I saw Mr. Bigfoot.  Boogie, boogie, boogie."  It's from "Bigfoot" by Rick Dees, a song I haven't heard in decades.  It would have been a logical flip side for the 45 of the hit, "Disco Duck."  Why it chose those moments to lodge itself back into my brain after so long remains a mystery.