Classic

As I've said before, there are several different ways to do crossovers and references to other strips. Obvious, subtle, mocking, respectful, etc. Today's Zits strip gives us a reference to a classic motif from a classic strip. It's a respectful tribute, and also so blatant and in-your-face that it outright announces that it's doing a tribute. This sort of thing wouldn't work if it was used often, but I think it works fairly well here.