>> well, this piece is called "lick my love pump". >> the idea was we were gonna do a mock documentary. we were gonna make a satire of a rock and roll band on tour. we basically had the tour outlined, but essentially, it was a very, you know, thin thumbnail sketch of what was gonna happen. the whole movie is improvised. >> do the dead bird. changes. get the dwarf cannolis, the little ones. okay. >> all right. i did the bird. >> come on, don't talk back, huh? mime is money. let's go. come on. move it. >> you had these brilliant performances by all of them, and then rob put it all together and made it sync. >> people didn't know what we were doing. they thought it was a real documentary, and when we first previewed it, people saw it and they said, "why would you make a movie about a band that nobody ever heard of, and one that's so bad?" ♪ working on a sex farm ♪ ♪ employing through your bean field ♪ >> let's say you look at a prospective movie and it's a square. rob reiner has a way of turning it sideways, looking at it