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

“At the end of the day, a cliché walks into a bar—fresh as a daisy, cute as a button, and sharp as a tack.”

The joke was posted on Language Matters on September 20, 2014. (This date may be incorrect.) However, the joke went viral in February 2018.


Language Matters
Saturday, September 20, 2014
Updated Humour for Intelligent People
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14. At the end of the day, a cliché walks into a bar—fresh as a daisy, cute as a button, and sharp as a tack.

Google Groups: Dicta
After bad new, a few things to make us smile
anna.durbin
02/26/18
(this was shared by my fellow English major classmate.) But RIP, Susan.  We miss you.
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At the end of the day, a cliché walks into a bar—fresh as a daisy, cute as a button, and sharp as a tack.

Twitter
Charles Dodgson
@CHDodgson
5/6 At the end of the day, a cliché walks into a bar—fresh as a daisy, cute as a button, and sharp as a tack.
A run-on sentence walks into a bar it starts flirting. With a cute little sentence fragment.
Falling slowly, softly falling, the chiasmus collapses to the bar floor.
7:53 PM - 27 Feb 2018

Twitter
IG TheTalentedMrWes
@ikariusrising
At the end of the day, a #cliché walks into a bar – fresh as a daisy, cute as a button, and sharp as a tack......
#English #words #humor #VERBAL
11:10 AM - 28 Feb 2018

Reddit—Writing
A dangling participle walks into a bar… (self.writing)
submitted March 10, 2018 by Pale_King101
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At the end of the day, a cliché walks into a bar—fresh as a daisy, cute as a button, and sharp as a tack.

14 March 2018, The Mercury (Durban, South Africa), “‘Twas at a gathering of the clans,” pg. 19:
At the end of the day, a cliché walks into a bar—fresh as a daisy, cute as a button, and sharp as a tack.