Dan Piraro also (as he does) used this in the headers of his weekly blog post, with a nice short commentary on familiar cartoon tropes and several examples of his use of the desert island.
(Yes, you may have seen this here about a week ago, in the comments to “Why do you ask?”)
Patience!
This reads as though she’s hinting he let the dog lick the bowls clean. Only, I don’t recall them having a dog?
Comics I Don't Understand 