“I can eat sugar with either hand. I’m ambidextrose” (“ambidetrose” is a portmanteau of “ambidextrous” and “dextrose”) is a joke that has been printed on an ecard. “One of our local citizens has coined a new word. It’s ‘ambidextrose.’ He defines it as ‘The ability to eat sugar with either hand’” was printed in the Pittsburgh (PA) Press on August 25, 1946.
   
“I can eat sugar with either hand… I’m ambidextrose!” was posted on Reddit—Jokes on July 12, 2019.
 
     
25 August 1946, Pittsburgh (PA) Press, “Reporter’s Notebook” by Gilbert Love, sec. 3, pg. 1, col. 7:
One of our local citizens has coined a new word. It’s “ambidextrose.” He defines it as “The ability to eat sugar with either hand.”
     
24 January 1957, CHicago (IL) Daily Tribune, “A Line O’ Type Or Two,” pt. 1, pg. 10, col. 3:
SIR: My second cousin says he is ambidextrose. he can put sugar in his coffee with either hand.
Irene Koenig Keepin
 
8 September 1961, Detroit (MI) Free Press, “The Town Crier” by Mark Beltaire, pg. 56, col. 2:
Jack Schermerhorn defines “ambidextrose” as the “ability to sugar your coffee with either hand.”
 
Google Books
Saturday Review
Volume 47
1964  
Pg. 89:
He says he wonders about a person who might stir the sugar into his coffee with either hand.
 
“Would you say,” he writes, “that a person of this sort is ambidextrose?”
     
Google Groups: alt.humor.puns
Looking for Daffynitions
Fred L. Clay
12/22/96
(...)
AMBIDEXTROSE: Able to spoon sugar with either hand.
 
9 May 1998, The Post and Courier (Charleston, SC), “Technology that works for cyber-impaired” by Elsa McDowell, pg. 1:
Ambidextrose: Able to put sugar in coffee with either hand.
 
Twitter 
Jody Ann❦
@jody1142
I can eat sugar with either hand.
I’m ambidextrose.
11:39 PM - 20 Feb 2013
   
Twitter
Barry Green
@barrydgiii
I can eat sugar with either hand. I’m ambidextrose!
11:07 PM - 27 Feb 2013
   
Twitter
Curly_Haired_Vixen
@nettie1969
I can eat sugar with either hand.
I am ambidextrose.
11:32 AM - 4 Dec 2013 from Sheffield, England
 
Reddit—Jokes
Posted by u/Bakedschwarzenbach July 12, 2019
I can eat sugar with either hand…
I’m ambidextrose!
 
Reddit—Cleanjokes
Posted by u/Bakedschwarzenbach July 14, 2019
I can eat sugar with either hand…
I’m ambidextrose!