“How do you prevent a summer cold?”/“Catch it in the winter.”
A riddle about the seasons is:
Q: How do you prevent a summer cold?
A: Catch it in the winter.
The joke has been cited in print since at least 1996.
Google Books
Funniest Riddle Book in the World
By Morrie Gallant
New York, NY: Sterling Publishing Company, Inc.
1996
Pg. 35:
How do you prevent a summer cold?
Catch it in the winter.
2 January 2001, Orlando (FL) Sentinel “Kids’ Corner,” pg. D10, right masthead:
Question: How do you prevent a summer cold?
Answer: Catch it in the winter!
20 October 2001, Tallahassee (FL) Democrat, “Risking Failure,” pg. A12:
How do you prevent a summer cold? Catch it in the winter!
Google Groups: alt.humor.puns
Puns of the Weak 10-03-03
Stan Kegel
10/3/03
(...)
How do you prevent a Summer cold?
Catch it in the Winter! (Carol Silver)
Twitter
carl edmondson
@scorpi2000
How do you prevent a Summer cold?
Catch it in the Winter!
1:45 AM - 1 May 2009
Google Books
Really Silly Jokes
By Cyl Lee
Minneapolis, MN: Abdo Publishing
2017
Pg. 13:
How do you prevent a summer cold?
Catch it in the winter!