“A guy walks into a bar…” is a typical form of what has been called the “bar joke.” A The Chronicles of Narnia version is:
       
“A lion, a witch and a wardrobe walk into a bar. The bartender says, ‘I ain’t serving Narnia!’”
   
“Narnia” sounds like “none of you.” “A lion, a witch and a wardrobe walk into a bar… The barman says ‘I’m not serving Narnia!’” was posted on Twitter by Ross Murray on November 2, 2014.
 
   
Wikipedia: The Lion, the Witch and the Wardrobe
The Lion, the Witch and the Wardrobe is a fantasy novel for children by C. S. Lewis, published by Geoffrey Bles in 1950. It is the first published and best known of seven novels in The Chronicles of Narnia(1950–1956). Among all the author’s books, it is also the most widely held in libraries. Although it was originally the first of The Chronicles of Narnia, it is volume two in recent editions that are sequenced by the stories’ chronology.
         
Twitter
Jon Aherne
@Erndogz
@BrewhouseLive I’m working on a joke for your cast, got this far: A lion a witch and a wardrobe walk into a bar…......................
11:59 AM · Nov 10, 2010·Twitter Web Client
   
Twitter
Rev. Colin Dipple 💙 🌈❤️🧡💛💚💙💜🌈
@dippcol
A Lion, a witch and a wardrobe walk into a bar, the barman says I am serving Narnia!
8:24 AM · Jul 23, 2014·Twitter Web Client
   
Twitter
Fragile Creatures
@FragileCreature
A lion, a wtich and a wardrobe walk into a bar, completely out of their minds. The barman says, “I’m serving Narnia” boom tsk
12:34 PM · Aug 13, 2014·Twitter Web Client
   
Twitter
Ross Murray
@RosscoJammin
A lion, a witch and a wardrobe walk into a bar…
The barman says ‘I’m not serving Narnia!’
#weeeeeeyyyyy
2:10 PM · Nov 2, 2014·Twitter for iPhone
   
Twitter
Mark Summers
@markysumm
A lion, a witch and a wardrobe walk into a bar. The barman says, “I ain’t serving Narnia” ...
10:26 AM · Nov 10, 2014·Twitter Web Client
 
Reddit—Jokes
Posted by u/jimburgah December 17, 2015
A lion, a witch, and a wardrobe walk into a bar
The bartender asks what they’re having.
The witch replies “Narnia business.”
 
Reddit—Jokes
Posted by u/DR-Feel August 24, 2016
A lion, a witch, and a wardrobe walk into a bar. The bartender yells,
“Get out! I’m not serving Narnia!”.
 
Reddit—Dadjokes
Posted by u/[deleted] November 28, 2019
A lion, a witch and a wardrobe walk into a bar
The bartender says “I’m severing Narnia!”
     
Reddit—Jokes 
Posted by u/ninjasonic102 February 24, 2020
A lion, a witch, and a wardrobe walk into a bar.
The bartender looks at ‘em all and says “I ain’t serving Narnia!”
 
Twitter
Ralph Nelson Willett
@NorthernOvation
A lion, a witch and a wardrobe walk into a bar. The bartender points to the door and shouts, “Get out! I’m not serving Narnia!”
10:55 PM · Mar 23, 2022·NorthernOvationMediaBot
 
Reddit—Dadjokes
Posted by u/EmbarrassedPianist59 March 25, 2022
The lion, the witch and the wardrobe walk into an Irish bar..
The barman takes one look at them and says ‘I ain’t servin narnye!’