transition
Explanation
This comic shows a father and son fishing together. The father describes a life transition: "Well, at a certain point in your life you change. You become softer, happier, and nicer smelling, and at the end of that transition everyone indulges you and nothing hurts." The child excitedly says "Hooray!" before the father catches himself: "Hooray? Wait, oh my God. Oh jeez..."
The caption explains: "Inadvertently, Steve gives the puberty conversation in reverse." The joke is that the father was describing old age and senility (becoming soft, pleasant-smelling from lotions, and being indulged by caretakers), but the child interpreted it as a description of growing up. The father then realizes he's accidentally described the trajectory of life backward -- the description of becoming elderly sounds appealing to a child, while the actual puberty talk (becoming smellier, more aggressive, confused) would be the opposite. It's a bittersweet observation about how the end of life can ironically mirror the comforts of childhood.