“What did one strawberry say to the other?” (joke)

A popular riddle/pun about strawberries is:
 
Q: What did one strawberry say to the other strawberry?
A: If you weren’t so fresh, we wouldn’t be in this jam!
   
“What did one strawberry say to the other?”/“Looks like we’re in a jam” is a joke that was told on Kay Kyser‘s radio show in September 1940.
 
       
15 September 1940, Dallas (TX) Morning News, “This Week on WFAA-WBAP,” sec. 4, pg. 7, col. 8:
And “What did one strawberry say to the other?” “Looks like we’re in a jam.”
(Kay Kyser’s show.—ed.)
 
26 September 1940, Milford (IA) Mail, “Ditties,” pg. 4, col. 2:
Ques.—What did one strawberry say to the other strawberry?
Ans.—It looks like we’re in a jam.
 
20 October 1940, Dallas (TX) Morning News, “School Children Can’t Study, Nobody Talks Sense as Daffy Question Game Sweeps Dallas,” sec. 2, pg. 1, col. 7:
Q.—What did one strawberry say to the another strawberry.
A.—We certainly are in a jam.
 
Google Books
Everybody’s Party Book
By Harry Wright Githens
Franklin, OH: Eldridge Entertainment House
1948
Pg. 24:
What did one strawberry say to another?
(It seems we’re in a jam.)
 
Google Books
December 1959, Boys’ Life, “Think and Grin,” g. 94, col. 4:
Jack: “What did one strawberry say to the others?”
Mac: “If you weren’t so fresh we wouldn’t be in this jam.” — Paul Van Diest, Bakersfield, California.
 
Google News Archive
24 June 1963, Deseret News and Telegram (Salt Lake City, UT), ‘Fun TIme—The Riddle Box,” pg. 10B, col. 3:
What did one strawberry say to the other strawberry?
If you weren’t so fresh, we wouldn’t be in this jam!
 
Google News Archive
7 April 1965, The Free Lance-Star (Fredericksburg, VA), “Fun Time—The Riddle Box,” pg. 23, col. 2:
What did one strawberry say to the other?
I think we’re both in a jam.
 
Google Books
Encyclopedia of Food and Culture:
Food Production to Nuts, Volume 2
Edited by Solomon H. Katz and William Woys Weaver
New York, NY: Scribner
2003
Pg. 218:
For example: “Q: What did one strawberry say to the other strawberry? A: If we hadn’t been found in the same bed together we wouldn’t be in this jam!”
 
Twitter
Biz Stone
‏@biz
What did one strawberry say to the other? “If you weren’t so fresh, we wouldn’t be in this jam!”
6:23 PM - 2 Jul 2008
 
Google Books
Fun Jokes for Kids:
More Than 500 Squeaky-Clean, Super Silly, Laugh-It-Up Jokes for Kids Ages 8-12..
By Compiled by Barbour Staff
Uhrichsville, OH: Barbour Publishing, Inc.
2014
Pg. ?:
What did one strawberry say to the other?
“You sure got us into a jam this time.”