Entry in progress.—B.P.
30 November 1988, St. Albans (VT) Messenger Shopping News, “Burn one and take it through the garden,” pg. 20, col. 1:
“Wax a wimpy with frog sticks,” Ernest continues, when another customer orders the classic American cheeseburger with french fries.
Google News Archive
21 November 1995, Gettysburg (PA) Times, “Diner lingo disappears in changing times” by Mark Harden (Columbus Dispatch), pg. A4, col. 4:
In other environs, French fries were called “frog sticks.”
How to Talk American:
A Guide to Our Native Tongues
By Jim Crotty
Boston, MA: Houghton Mifflin Company
frog sticks: french fries.
#dinerlingo - can you guess what ‘Frog Sticks’ are? 🍟
5:10 AM - 6 Aug 2015
The Delicious Guide to Diner Lingo
by Daniel Adler on September 1, 2015
Frog Sticks French Fries