Man: You Each Have A Knob In Front Of You.

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Man: You each have a knob in front of you. When you like what you
see, turn the knob to the right. When you don't like what you
see, turn it left.
Ralph: [knob in mouth] My knob tastes funny.
Man: Please refrain from tasting the knob.
-- `17/ of all children dislike the taste of knobs',
"The Itchy & Scratchy & Poochie Show"