I had never heard of Scapin before going to the show, but it turns out that the play-writes, Bill Irwin and Mark O'Donnell, adapted this from Moliere! And all they really did was modernize it; the concept, the story line, the characters, all that, is still basically the same. Also, I think there's room for improv/customization within the script, because some jokes were very topical and some were very local. It made it that much more fun!
Moliere's original title is Les Fourberies de Scapin, which literally translates to Scapin's Deceits, which gives you a pretty good idea of the basic structure, and hilarity, of the play. Scapin also fits in well with Shakespearean comedies -- it had a content warning for double entendres and innuendos as well. It was really well done, with lots of audience involvement and character's speaking directly to us. The two best were, of course, David Ivers as Scapin and Matt Zambrano as Syvestre, the faithful sidekick. They worked very well together and made the show very enjoyable. If you want to "pee your pantaloons" laughing- you better get some tickets for Scapin!!