There’s a great Far Side cartoon of an auditorium full of scientists (all of whom have glasses, lab coats, and the other accountrements that scream “scientist” in Cartoon Land), one of whom looks surprised and sheepish. The caption reads, “Suddenly Professor Liebowitz realizes he has come to the seminar without his duck.” Everybody else has a duck in his lap.

Years later comes this.

[To the tune of The Who, “You Better You Bet,” from the album The Ultimate Collection (Disc 2).]