The first french fries were made in France, right? Not according to a popular joke. A riddle has been cited in print since at least 1976:
 
Q: Where were the first French fries made?
A: In Greece (grease).
 
“Where were the first French fries cooked?  In Greece” was posted on the newsgroup rec.humor on September 4, 1999.
 
         
Wikipedia: French fries
French fries (North American English), chips (British English), fries, finger chips (Indian English), or French-fried potatoes are batonnet or allumette-cut deep-fried potatoes. In the United States and most of Canada, the term fries refers to all dishes of fried elongated pieces of potatoes, while in the United Kingdom, Australia, South Africa (rarely), Ireland and New Zealand, thinly cut fried potatoes are sometimes called shoestring fries or skinny fries to distinguish them from the thicker-cut chips. 
   
Google Books
Biggest Riddle Book in the World
By Joseph Rosenbloom
Illustrations by Joyce Behr
New York, NY: Sterling Publishing Company, Inc.
1976
Pg. 38:
Where were the first French fries made?
In Greece (grease).
 
Google Groups: rec.food.cooking
Very Latest Food Craze
Larry Polnicky
3/11/96
Mary Elizabeth wrote:
> sharon badian wrote:
> > It does in France. Many nice restaurants serve French fries with steak
> > or chops. And as far as I’m concerned good French fries (like you get in
> > France) are definitely better than steamed potatoes. It’s so rare to find
> > a restaurant in the US that actually makes real French fries - fresh
> > potatoes, fried twice and all.
 
I might point out that the first french fries were made in Greece.  😉
   
Google Groups: alt.fan.pratchett
Christmas cracker humor
Mark
12/25/98
(...)
Q.      Where were the first french fries made?
A.      In Greece.
 
Google Groups: rec.humor
Groaners
A Lieberman
9/4/99
(...)
Where were the first French fries cooked?  In Greece.
 
Twitter   
Father Stefan‏
@FatherStefan
Where were the first french fries cooked?
In Greece
5:01 PM - 3 Sep 2009
 
Twitter
Karen Mixon‏
@ktmixon315
RT @MaryBeth66: RT @FatherStefan: Where were the first french fries cooked?In Greece Actually…in Belgium. 😊
9:40 PM - 3 Sep 2009
     
Twitter
BRITT DA H8R SLAYER‏
@SexNiallUp
Did you know the first French fries weren’t actually cooked in France?
They were cooked in Greece😂
9:32 PM - 25 Mar 2017
 
Reddit—Dad Jokes 
Did you know french fries weren’t actually cooked in France? (self.dadjokes)
submitted August 4, 2017 by somekindahuman
They were cooked in Greece.
 
Reddit—Dad Jokes
Did you know the first french fries weren’t actually cooked in France? (self.dadjokes)
submitted August 26, 2017 by JOEYSARMY
They were cooked in Greece!
 
Reddit—Oneliners
French fries couldn’t have been created in Paris, because they were cooked in Greece.
submitted October 29, 2017 by wonliners
 
Twitter
Camille “Your Mom”‏
@CamillieIris
Dad Joke Wednesday:
Did you know the first French fries weren’t cooked in France? They were cooked in Greece.
9:01 AM - 22 Nov 2017