It's not surprising that a colorful and lively show like Sesame Street, one devised by the genius that was Muppets creator Jim Henson, was at heart a comedy. What is surprising is that so many adults who grew up with the show still find it so damn funny (or maybe that has more to do with the rise of marijuana use, but beggars can't be users, er, choosers).

In fact, a recent box set of the show's earliest episodes came with a disclaimer that the episodes contained within it were "not for kids." That's also because it contained the rare lost episode from the early 1970s when Grover and Prairie Dawn accidentally wandered into the Plato's Retreat swingers club where they learned the difference between "top" and "bottom".

The point is adults can find just as much to laugh at as their kids do and here are the biggest chortle-makers.