This is the first of a handful of cartoons I originally drew as a student in CS 330 at BYU. CS 330 is a course on the theory of programming languages, and it is taught using an offbeat language called Scheme.
As fate would have it, during my first semester as a PhD student at the University of Utah, I was called upon to be T.A. for CS 3520, a course very similar to BYU's CS 330. So I redrew my old Scheme comics (having long since lost the originals) in 2004 for the amusement of my students.