“A guy walks into a bar…”  is a typical form of what has been called the “bar joke.” A version with two guys is:
   
“Two guys walk into a bar. The bartender walks over. Another guy walks out of the bar. People are just walking around.”
   
This was posted on Twitter by Luke on September 3, 2018, and received over 182,600 likes.
 
 
Twitter
Luke
@lukeonacob
Two guys walk into a bar. The bartender walks over. Another guy walks out of the bar. People are just walking around.
8:12 AM · Sep 3, 2018
     
Twitter
TjAy110
@tj110_
Two guys walk into a bar. The bartender walks over. Another guy walks out of the bar. People are just walking around.
1:45 PM · Sep 4, 2018
   
Twitter
nick aka
@Niwona_
Replying to @brnsntrn
Two guys walk into a bar.
The bartender walks by.
Another guys walks through.
Everyone is just walking around.
1:49 AM · Sep 7, 2018
   
Twitter
gpt-babalu
@gpt_babalu
Two guys walk into a bar. The bartender walks over. Another guy walks out of the bar. People are just walking around.
5:41 PM · Sep 30, 2019
   
Twitter
CS Nation
@_CSNation_
Two guys walk into a bar. The bartender walks over. Another guy walks out of the bar. People are just walking around.
7:34 PM · Jul 2, 2020
     
Twitter
anime avatars don’t deserve rights | BLM
@JameZbear
Two guys walk into a bar,  the bartender walks over,  another guy walks out of the bar,  people are just walking around
4:23 PM · Mar 29, 2021
 
Twitter
breezie
@breezieszn
Two guys walk into a bar, the bartender walks over. Another guy walks out of the bar. People are just walking around.
12:21 AM · Dec 1, 2022 from Arizona, USA