The space bar on a keyboard is not a bar that serves drinks, but there are jokes. This was posted on Reddit—Jokes on October 28, 2020:
     
“Iamonthemoonandthereisnowheretogetabeer.
Thereisnospacebar.”
   
That is, “I am on the moon and there is nowhere to get a beer. There is no space bar.”
   
“I keep pressing the space bar, but I’m still on Earth” and “Where do astronauts go to drink?”/“The spacebar” are other space bar jokes.
   
   
Wikipedia: Space bar
The space bar, spacebar, blank, or space key is a key on a typewriter or alphanumeric keyboard in the form of a horizontal bar in the lowermost row, significantly wider than other keys. Its main purpose is to conveniently enter a space, e.g., between words during typing.
   
Twitter
Carly Schmidlin
@carlyschmidlin
My dad got a new phone yesterday. I just received my first text from him
“Thereisnospacebar” Face with tears of joy
1:09 AM · Dec 15, 2016·Twitter for iPhone
 
Reddit—Jokes
Posted by u/TazocinTDS October 28, 2020
Iamonthemoonandthereisnowheretogetabeer.
Thereisnospacebar.
   
Twitter
JokesBot
@RedditJokesBot
Iamonthemoonandthereisnowheretogetabeer. Thereisnospacebar.
5:09 AM · Oct 28, 2020·IFTTT
   
Twitter
𝕱𝖑𝖎𝖕
@flipside666
Iamonthemoonandthereisnowheretogetabeer.
Thereisnospacebar.
8:25 AM · Oct 28, 2020·Twitter for Android
 
Twitter
Dad Jokes
@Dadsaysjokes
Iamonthemoonandthereisnowheretogetabeer.Thereisnospacebar.
4:17 PM · Oct 28, 2020·Twitter for iPhone
 
Twitter
Slim
@zugumnan600
Iamonthemoonandthereisnowheretogetabeer.
Thereisnospacebar.
2:56 AM · Oct 29, 2020·Twitter for iPhone