Z (joke line)

"Zzzzzz" redirects here. For the Outer Limits episode, see ZZZZZ.
Zzzzzz as it appears in the June 1971 issue of the Los Angeles Central White Pages

Zzzzzz, later just Z, was a dial-a-joke service active in the 1970s and early 1980s. Started by Bob Bilkiss (1949–1989[1]) of West Los Angeles in 1970, it operated from the 213 area code and was named so to appear last in the Los Angeles telephone directory. Emerging from a wave of dial-a-joke numbers in Los Angeles in the turn of the 1970s,[2] Zzzzzz enjoyed a high level of popularity in its day. For several years, it was the busiest residential telephone number in the United States, if not the world.[3]

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