Badly drawn butts: One, in panel 1.
Oh, brother. I'd forgotten how utterly corny John can be.
Now, what's the deal with April's remark in panel 2? Does she really think of her parents as young? Does any 14 y/o? Granted, there's a mysterious absence of gray in their hair, but how can she think of arm-flappin', hot-flashin' Elly as young? Is she just being diplomatic, knowing that saying, "Yeah, you and Mom sure are fogeys!" would not be the wisest response?
People regularly dying after they hit 50? I think, once again, Lynn is proving that she's out of touch. That's her parents' generation, not her own. Her generation got inoculations, vitamins, milk, and generally better health care. They're not aging at the same rate as the WWII generation.
And I love the banana as a dramatic device. In panel 1, John is peeling it so fast his right hand is a blur. In panel 2, he somehow manages to talk coherently with a mouthful of mushy fruit. Then in panel 4, to underscore his point about people his age being used up, John drops the empty, deflated skin onto the table. Bravo, Lynn! Worthy of Fellini!
(Edited to change Truffaut to Fellini. He's the one who really gets analyzed for symbolism he probably never intended; probably just liked the way certain shots looked and that was it.)