“I haven’t had a single drink all day. They’ve all been doubles”

“Love Dean Martin’s Line: ‘Haven’t had a single drink all week…only doubles’” was printed in the Valley Times (North Hollywood, CA) on January 31, 1959. American singer, actor and comedian Dean Martin (1917-1995) probably had the line written for him by an unknown gag writer.
 
“‘I haven’t had a single drink all week.’ They have all been doubles. *woka, woka.*” was posted on Twitter by Brandon Baker on December 14, 2008. “i havent had a single drink today…they’ve been doubles!” was posted on Twitter by Joey Reichelon June 15, 2009.
 
“I haven’t had a single drink today, they’ve all been doubles” was posted on Reddit—Oneliners on October 6, 2019.
   
     
Newspapers.com
31 January 1959, Valley Times (North Hollywood, CA), “The Boulevard Beat” by Bill Bush, pg. 20, col. 6:
One For The Road
Love Dean Martin’s Line: “Haven’t had a single drink all week…only doubles.”
 
Twitter
Brandon Baker
@BrandonBaker
“I haven’t had a single drink all week.” They have all been doubles. *woka, woka.*
7:52 PM · Dec 14, 2008·Twitter SMS
     
Twitter
Joey Reichel
@JosefMichael
“i havent had a single drink today…they’ve been doubles!”
6:39 PM · Jun 15, 2009·Twitter SMS
 
Twitter
The Middle Child
@LindsayFultz
Haven’t had a single drink all weekend. They’ve all been doubles.
2:51 PM · May 20, 2012·Hootsuite
   
Twitter
Doctor Funkenstein
@DrFunkSays
“I haven’t had a single drink all week” = i only drink doubles now
4:29 PM · Jun 26, 2014·Twitter Web Client
 
Twitter
Spaced
@Spaced_Cowboy00
I haven’t had a single drink in years. They’re usually doubles.
3:17 PM · Oct 6, 2017·Twitter for iPhone
     
Twitter
Kevin G
@KevinG627
Replying to @dchillysauce
I haven’t had a single drink in years…
All doubles for me!😏
7:57 PM · Sep 28, 2018·Twitter for iPhone
 
Reddit—Oneliners
u/JackDeGallo June 28, 2019
I haven’t had a single drink all day. They’ve all been doubles.
 
Reddit—Oneliners
u/WhiskeyChugger October 6, 2019
I haven’t had a single drink today, they’ve all been doubles.