“What does the sun drink out of?”/“Sunglasses.”

A drinking riddle is:
   
Q: What does the sun drink out of?
A: Sunglasses.
 
The joke has been cited in print since at least 1995.
 
   
31 January 1995, The News Journal (Wilmington, DE), “Just for laughs,” Kids sec., pg. 1, col. 3:
Q. What does the sun drink out of?
A. Sunglasses.
Robert Palute, age 8
Newark
         
Google Books
My Summer Vacation Book:
Jokes, Puzzles, Games, Activities, Spooky Stories, Silly Songs, and More!
By Stephanie Calmenson
Illustrated by Patrick Girouard
New York, NY: Scholastic Inc.
1997
Pg. 27:
What does the sun drink out of?
Sunglasses.
   
Google Books
The Sky’s the Limit:
Naturally Funny Jokes
By Rick Walton and Ann Walton, with Scott K. Peterson and Peter and Connie Roop
Minneapolis, MN: Carolrhoda Books, Inc.
2004
Pg. 8:
Q: What does the sun drink out of?
A: Sunglasses.
 
Reddit—Jokes
u/sparklingh2o September 20, 2012
What does the sun drink out of?
Sunglasses.
   
Reddit—Dadjokes
u/pittsburgh635 September 1, 2017
What does the sun drink out of?
Sunglasses 😎
 
Twitter
Classic Country WGLC
@wglc
Riddle of the Day: What does the sun drink out of? Answer: Sunglasses #WGLC
8:50 AM · Aug 30, 2019·TweetDeck
 
Reddit—Dadjokes
u/badpunforyoursmile October 9, 2019
What does the sun drink from?
Sunglasses!