Today's Dinette Set completes a thematic trifecta in which Burl and Joy demonstrate preternatural stupidity about things mathematical, lingual, and (now) temporal. I would love to convince myself this was deliberate, but I suspect the artist is actually simply running out of ideas in more dramatic fashion than previously suspected.
On the other hand, one revealing detail in today's panel stands head-and-shoulders above anything else.
I am delighted to find out that Burl, when removing his Halloween pumpkin, cannot stifle the urge to stomp on it. I imagine this small annual expression of sheerest rage is the thin wall which keeps the demons at bay and prevents Burl from doing the same thing to Joy.