Corwin Cluff arrives home to find the foreign exchange students living in his home (Tom Byron and Rene Loving) giving themselves a sex education course on his couch, so he retires to the bedroom to find his equally nerdy wife glued to the tube watching It's Incredible. From here on, the tape intercuts between the TV show itself (hosted by none other than Ron Jeremy) and the inept, hilarious results of the Cluffs trying to duplicate the incredible sex feats.
There's a woman with a snake on TV intercut with the Cluff version, a garden hose. These crazy Cluffs also experiment with whipped cream, but the final gag – an orgy with the students – takes it to the limit when Corwin observes them covered in love juice and discovers a new meaning to "wetback!"
Sandwiched in the middle of all this nonsense is some good, peppy spots on It's Incredible, including a fabulous five-guy-one-girl screw-a-thon with Lili Marlene, and a charged lesbo session that is hot, but far too long.
Being the elitist swing that I am, I felt more than a little bit guilty watching, nay enjoying, such a lowbrow idiocy as It's incredible. As a parody of a prime time TV show, the feature is more miss than hit, but with Rick Savage as the nerdy Corwin Cluff, the cassette takes off to new heights of dumb fun.