Perhaps it comes from high school English teachers who teach students to start a paper with: "In this paper I will discuss Ancient Babylonian cuneiform". 'Cause the title, "Ancient Babylonian Cuneiform", wasn't . . . like . . . a clue.
Physics humor, whats not to love?
Mr. Munroe must be in a different cohort than the guys I know. They definitely would put 9 ahead of 4, but probably not 5.
Either checking the box removes the whole record, or the FAA is really behind in posting it.
A couple of additions to that list:
Heater (or HVAC if you live further south).
Cold water heater ('cause hot water heaters are redundant)
Range / Oven ('cause you can't microwave real food)
BBQ grill (in case a guy is doing the cooking)
Bathroom with shower
"Course then you can move out of...