I'm with BuseyTV Show

Gary teaches Adam about Mystery in this episode. After Adam solves the mystery of where in the house Gary is, Gary shows Adam the mystery of feeling like a cow full of milk. Then comes the mystery of UFOs as well as "replicants", complete with re-enactments. An encounter with alien activity expert E.W. leads to attempts to communicate with other replicants and then a journey to find Bigfoot. Unfortunately, the alien expert and the Bigfoot expert have a disagreement about the validity of their respective fields and go toe-to-toe, much to Adam and Gary's amusement.