I like it too (as one of the masses underwhelmed by other recent strips), but of course, the last panel payoff could have really played on the horror of grampa being buried alive.
I was kinda puzzled about what was happening with the cat in the second panel last time; I thought it was flying too until I actually scrolled down and read responses from GAFfers, upon which I started laughing too.
Funny, but as some have alluded to, the last panel should've been darker; Gramps screaming in pain or yelling for help as he runs out of air would've been fucking hilarious in a "LOL, Terri Schiavo's dead," way.