Not PB&J sandwich, but just PB&J. Granted, PB&J do make for a winning combinations, but what other ways can you make use of that pairing?
PB&J topped pancakes are always a nice start to the morning. Or maybe make some peanut butter cookies and then sandwich two cookies together with a layer of jelly in between. Or instead of slathering PB&J on bread, have it on crackers. But if you really want to get super fancy, Metro has an article with suggestions that pair PB&J with such things as foie gras and bacon. Actually, it seems like everyone's talking about today: ABC News has five PBJ sandwich variations to try; Gothamist has a roundup (I really like the idea of the jelly-filled donut glazed with peanut butter); JACK FM 93.1 lists things they would add to PB&J; News Net 5, a Cleveland news channel, points out that the average American eats 1500 PB&J sandwiches before graduating high school; and SheKnows celebrates the lunchbox staple.
So, if you're feeling really lazy, just mix some peanut butter and jelly together in a bowl and eat it by the spoonful. I can't say I recommend that, though- at least spread it on some crackers.