This is pretty creepy. A clean-shaven, crew-cut Frank Zappa. Playing the bicycle!
Watching this footage may well be what caused Zappa to come up with the title "Weasels Ripped My Flesh."
Sorry about the quality, but this is from a time when pictures were printed on thin sheets of highly flammable film, and then run through a machine with lightbulbs inside a "projector."
Hard to believe that in less than ten years, Frank would be singing, "Don't fool yourself, girl. It's going right up the poop shoot."