Last night I watched Eegah, another goofy 60's movie about a caveman and his love for a teenage girl. It also had her boyfriend, a squishy-mouse-faced teenager that sings and plays the guitar. Every once in a while he inexplicably breaks out into a song.
The basic premise was the caveman lives in the hills, captures the girl's father (although it may also be called a "rescue"), and she and her boyfriend go out looking for her in his dune buggy, which is just a stripped down car. She is taken by Eegah the caveman, meets his dead preserved ancestors, shaves his beard off, and escapes. The caveman follows her (and her dad and boyfriend) back to town and terrorizes people in search of her. Finally the police shoot him multiple times and he dies an ignominious death face down in a backyard pool.
I give this movie one empty seat, for the one word (Eegah!) I understood from the caveman.
PS. Eegah the caveman was played by the same guy that later played Jaws in James Bond films.