The women's room at Argo Tea (Sears) features a Diaper Deck. Here are descriptions of the visuals and the accompanying text:
Standing baby is about to set something flat down, presumably on the Diaper Deck.
LAY TOWEL DOWN.
Baby appears to be suspended in midair by a belt through his undies.
Baby falls headfirst.
NEVER LEAVE BABY UNATTENDED.
Standing baby throws something in the trash.
DISPOSE OF TOWEL.
I finally realized "towel" means "diaper," which is odd as it is called a Diaper Deck.
My attention, however, was distracted by the baby who does it all—lays out his own towel (diaper), fastens himself in but falls off headfirst anyway, then recovers enough to dispose of his own soiled towel (diaper), which you can understand—you might soil yourself if you abruptly fell headfirst.
In all four visuals, clearly the baby has been left unattended. The lesson seems to be that if you leave baby unattended, he'll remove and dispose of his own diaper despite massive head trauma. Interestingly, he doesn't seem to have figured out how to put a clean one on.