“A guy walks into a bar…” is a typical form of what has been called the “bar joke.” A towel version is:
 
“A towel walks into a bar. He orders a drink and says, ‘I’ll have it dry.’”
 
The joke was posted on Reddit on May 8, 2016. “A lonely towel walks into a bar and says, ‘Nobody knows how dry I am’” had been posted on Reddit on January 29, 2015.
 
”“A pirate walks into a bar with a paper towel on his head” is another “towel” bar joke.
   
       
reddit
A lonely towel walks into a bar and says… (self.Punny)
submitted January 29, 2015 by Rybread13
Nobody knows how dry I am.
 
reddit
A towel walks into a bar…
submitted May 8, 2016 by Questale
He orders a drink, and says “I’ll have it dry.”
 
Twitter
BrownMurphy
‏@deniscdcershov1
A towel walks into a bar… He orders a drink, and says “I’ll have it dry.” #rofl
9:50 PM - 8 May 2016
 
Twitter
ChasityKanisha
‏@KanishaChasity
A towel walks into a bar… He orders a drink, and says “I’ll have it dry.” #LOL
10:14 PM - 8 May 2016
 
Twitter
AlmaSmith
‏@sashaurax
A towel walks into a bar… He orders a drink, and says “I’ll have it dry.” #joke
10:18 PM - 8 May 2016