Krenner: Keep your eye on the guinea pig.
Servo: [singing] Keep your eyeeeee on the guinea pig!
Servo: [singing] Keep your eyeeeee on the guinea pig!
Krenner : Keep your eye on the guinea pig.
Servo : [singing] Keep your eyeeeee on the guinea pig!
http://www.tv-quotes.com/shows/mystery-science-theater-3000/quote_30589.html