Kids love the fur, feather and felt-covered Muppets of "Sesame Street," and grownups love Jimmy Fallon and his late night gags.
So when it all came together for some photobombing fun Thursday on "The Tonight Show," the result was a treat for the whole family.
The bit started out with Fallon explaining the concept of photobombing to his "Sesame Street" pals, but they didn't quite get it — in theory.
In practice, however, it turned out they were all pros when presented with unsuspecting children posing for pics.
Just check out the results, from the "double hoagie":
To the "double-cookie":
And one great big Big Bird surprise:
Be sure to watch the clips for the best part of all — the moment the kids find out about the shenanigans that went on behind them.
Follow Ree Hines on Twitter.