I can't either, but it reminds me of a Peanuts comic strip from many years ago. Here's my best recollection of it.
Lucy and Linus and Charlie Brown are lying in the grass looking up at the sky.
Linus says (something like): "Look at that cloud! It looks like the Mona Lisa!"
Lucy replies (again, I can't recall the specifics): "And over there you have the ceiling of the Sistine Chapel!"
Charlie Brown then says: "I was going to say I see a horsie and a doggie but I think I won't."
-Eric M.