“Monkey bars” can be found on playgrounds and are not bars that serve alcohol, but there are jokes.
   
“As much time as I spent at the monkey bars in elementary school, I never once met a monkey bartender” was posted on Twitter by luke on July 26, 2012. “monkey bars imply the existence of monkey bartenders” was posted on Twitter by cody on December 25, 2019.
   
     
Wiktionary: monkey bars
noun
monkey bars pl (plural only)
1. A jungle gym.
2. A row of bars, found on playgrounds, under which one hangs by the arms and crosses by brachiation (swinging between bars, legs dangling down).
     
Twitter     
luke
@reevesdotluke
As much time as I spent at the monkey bars in elementary school, I never once met a monkey bartender.
8:46 AM · Jul 26, 2012·Twitter Web Client
 
Twitter
Derek Nason
@dereknason
In elementary I had a big epic fight w the school bully at the monkey bars. Then the monkey bartender kicked us out for being underaged
11:15 AM · Feb 23, 2013·Twitter for iPhone
 
Twitter
wimtalker.pdf
@timonator98
Heck yeah I was a fan of the monkey bars growing up. The monkey bartender was the only one in town that served children booze.
11:05 AM · Sep 5, 2014·Twitter for iPhone
 
Twitter
a piece of shit
@HanPeaches
Monkey bars with monkey bartenders #EXOL #BestFanArmy #iHeartAwards
@weareoneEXO
11:27 AM · Feb 17, 2018·Twitter for Android
 
Twitter
cody
@sleancate
monkey bars imply the existence of monkey bartenders
7:43 PM · Dec 25, 2019·Twitter for iPhone
 
Twitter
Kenyon
@KGeetings
If we have monkey bars, why don’t we have monkey bartenders?
6:33 PM · Jan 12, 2020·Twitter for iPhone
 
Twitter
D.N. Schmidt 📚
@Writepop
Monkey bars implies the existence of monkey bartenders.  They probably get really sick of making banana daiquiris.
5:57 PM · Mar 2, 2021·Twitter Web App