“Behind bars” usually means prison, but sometimes it means behind a drinking establishment. A riddle was posted on Reddit—Dadjokes on February 16, 2021:
     
Q: Why do bouncers throw violent drunks out the back door?
A: Because they belong behind bars.
     
“If you steal things from bartenders, you’ll end up behind bars” is another “behind bars” bar joke.
 
   
Reddit—Dadjokes
Posted by u/Shu-di February 16, 2021
Why do bouncers throw violent drunks out the back door?
Because they belong behind bars.
COMMENTS
HugoZHackenbush2
Obviously, the back alley is where the real punchline is..
 
Twitter
Dad
@ImYourDad___
Why do bouncers throw violent drunks out the back door?
Because they belong behind bars.
7:22 AM · Feb 16, 2021·IFTTT
 
Twitter
Aaron M.
@amcfarla
Dad joke time:
Why do bouncers throw violent drunks out the back door?
Because they belong behind bars.
#DadJoke
11:45 AM · Feb 16, 2021·Twitter Web App
 
Twitter
Dad Jokes
@adadjoker
Why do bouncers throw violent drunks out the back door?
Because they belong behind bars.
#dadjokes #dadjoke
7:15 PM · Feb 16, 2021·Twitter for iPhone