“Turn out the lights. The party’s over”

“The Party’s Over” is a 1967 song from music legend Willie Nelson. Former SMU and Dallas Cowboys quarterback and former Monday Night Football announcer “Dandy” Don Meredith would sing “Turn out the lights, the party’s over…” near the end of every Monday night game. If one team was getting crushed, the song would come out well before the end of regulation time. It was Meredith’s way of saying “stick a fork in him—he’s done.”
     
   
Wikipedia: Don Meredith
Joseph Don (Dandy Don) Meredith (born April 10, 1938 in Mount Vernon, Texas) was an American football quarterback for the Dallas Cowboys, football commentator, and entertainer.
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Post-football career
Following his football career, Meredith became a color commentator for ABC’s Monday Night Football beginning in 1970. He left for three seasons (1974 to 1976) to work with Curt Gowdy at NBC, then returned to MNF partners Frank Gifford and Howard Cosell. His approach to color commentary was light-hearted and folksy, in contrast to Cosell’s detailed and intellectual analysis and Gifford’s rather pondorous play-by-play technique. He was known for singing “Turn out the lights, the party’s over” at the time the game was apparently decided.
 
Willie Nelson: “The Party’s Over” lyrics
Turn out the lights
The party’s over
They say that
All good things must end
Call it tonight
The party’s over
And tomorrow starts
The same old thing again
 
15 December 1979, Los Angeles Times, “Playing One ‘for Pride’” by Paul Henninger, pg. C2:
With no apologies to Don Meredith, “The Party’s Over…” for all but eight of the 28 NFL teams entering this final weekend of the regular season.
   
18 August 1984, Los AngelesTimes, pg. C10:
The Detroit Tigers are about to sing a tune made famous by Don Meredith: “Turn out the lights, the party’s over.”