I'm all for the silly, and this short fic has it in spades.
Imagine you're an U.N.C.L.E. agent. Now imagine that you set off for work as you always did, took all the turns you always took, but inexplicably ended up on Sesame Street.
From Illya singing that "Spies are People in Your Neighbourhood" to Napoleon giving Kermit advice on how to handle a particular pig, this fic is a giggle a minute.