There it is! Just a second...
Panel 1: Whoa, here we go. Hybrid time, for reals! Or that's how it looks. The art is old but the lettering is new, presumably pasted over the original lettering? We have baby Liz on a blanket, sucking on a bottle, and Mike is doing the same. Okay, that's a bit ridiculous. It's totally realistic for an older child to be jealous of a new sibling and do a bit of reverting back to a younger age, but actually drinking from a bottle and curling up into the fetal position? At age 4 or 5? Does this happen? (ETA: Okay, maybe he's not really serious- he's just trying it out to see what it's like to be a baby, like with the drooling that's to follow in Panel 3.)
Panel 2: They're grinning at each other. Okay, I admit it. It's cute.
Panel 3: Now Mike's drooling, just like his baby sister. Not so cute.
Panel 4: Original lettering. Mike admits that babyhood isn't anything special. Hm. I'm not laughing, but it's not bad.