“A guy walks into a bar...” is a typical form of what has been called the “bar joke.” A baseball version is:

“A baseball walks into a bar, and the bartender throws him out.”

The joke has been cited in print since at least 2010. “A soccer ball walks into a bar, and the bartender kicks him out” is a similar joke.


Twitter
John Geaux
‏@tojohn123
@mxwll A baseball walks into a bar, and the bartender throws him out.
3:18 PM - 4 Feb 2010

Twitter
Paul
‏@forces2
A baseball walks into a bar, and the bartender throws him out…
12:38 AM - 7 Feb 2010

MumblingNerd’s Mumbling Blog
A man walks into a bar…
12 FEBRUARY 2010
Fairly short ones…
(...)
A soccer ball walks into a bar; the bartender kicks him out.
A baseball walks into a bar; the bartender throws him out.

Investorshub
Luckyk57 Member Level Friday, 05/21/10 07:50:28 AM
Re: eliot post# 12850
Post # 12864
More Walks Into A Bar Jokes found here: http://www.funny2.com/bar.htm

An inkjet cartridge walks into a bar. The bartender asks, “Are you sure you don’t need a refill?” (thanks to Riberet Almeida)

A baseball walks into a bar, and the bartender throws him out. (thanks to Dan Birr)

Twitter
KongRizla
‏@KongRizla
A baseball walks into a bar, and the bartender throws it out
10:04 AM - 22 Jan 2016