Fonzie would at times demonstrate an almost magical ability to manipulate technology with just a nudge,
bump or a
snap of his fingers (The Fonzie Effect) for things such as starting a car, turning on lights, coaxing free sodas from a vending machine, making
girls respond, or changing the song selection on a jukebox - occasionally pounding one with his fist and eliciting the response of a classic 1950s tune, such as the Elvis Presley song Hound Dog.