“A guy walks into a bar…” is a typical form of what has been called the “bar joke.” A pirate version is:
 
“A pirate walks into a bar. And it was at that moment that he realized that his patch was on the wrong eye.”
 
The pirate had, literally, walked into a bar. The joke was posted on Reddit—Jokes on September 27, 2018.
   
“A pirate walks into a bar with a steering wheel sticking out of his pants…” is another pirate version that has been cited in print since 2000. “A pirate walks into a bar with a paper towel on his head…” is another pirate version that has been cited in print since 2006.
   
 
Reddit—Jokes
A pirate walks into a bar…
submitted September 27, 2018 by Flesym133
And it was at that moment that he realized that his patch was on the wrong eye.
 
Twitter
Jokes OK Please
@jokesokplease
A pirate walks into a bar…. And it was at that moment that he realized that his patch was on the wrong eye.  #joke
2:10 AM - 27 Sep 2018
 
Twitter
Mr. Drinks On Me
@Mr_DrinksOnMe
A pirate walks into a bar, and it was at that moment that he realized that his patch was on the wrong eye.
5:06 AM - 27 Sep 2018