Beep, beep (sound)

"Beep Beep" is onomatopoeia representing a noise, generally of a pair of identical tones following one after the other, often generated by a machine or device such as a car horn. It is commonly associated with the Road Runner cartoon (meep, meep) in the Looney Tunes cartoons featuring the speedy-yet-flightless bird and his constant pursuer, Wile E. Coyote. Beep, Beep is the name of a 1952 Warner Bros. cartoon in the Merrie Melodies series.

Chuck Jones, the creator of the Road Runner, has stated that this sound, the only way the Road Runner can harm the Coyote, was inspired by hearing a Doppler-like effect as background artist Paul Julian imitated a car horn when he could not see where he was going. Julian voiced the various recordings of the phrase used throughout the Road Runner cartoons, although on-screen he was uncredited for his work. Although commonly quoted as "meep meep", Warner Bros., the current owner of all trademarks relating to the duo, lists "beep, beep" as the Road Runner's sound, along with "meep, meep." According to animation historian Michael Barrier, Julian's preferred spelling of the sound effect was "hmeep hmeep".

In 1978, Warner Bros. recycled the Road Runner's "beep, beep" sound for its television series, Wonder Woman, which featured a tiny robot-on-wheels named Rover who makes the "beep, beep" sound on occasion. It only appeared in the second season episode "I.R.A.C. is Missing".

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