A construction riddle is:
 
Q: Where do construction workers go to drink?
A: The Rebar.
 
The joke was posted on Twitter on June 18, 2014, and on Reddit—Jokes on October 17, 2017.
 
   
Wikipedia: Rebar
Rebar (short for reinforcing bar), collectively known as reinforcing steel and reinforcement steel, is a steel bar or mesh of steel wires used as a tension device in reinforced concrete and reinforced masonry structures to strengthen and hold the concrete in tension. Rebar’s surface is often patterned to form a better bond with the concrete.
       
Twitter
Ravi Mikkelsen‏
@RaviMikkelsen
Replying to @neiltyson
@neiltyson Where do construction workers go to get a drink? A: At the Re-Bar
6:09 PM - 18 Jun 2014
 
Twitter
Rob Warner‏
@djrobwarner
@neiltyson don’t forget… Q: Where do construction workers go to get a drink? A: The Rebar
6:43 PM - 18 Jun 2014
 
Twitter
Renésident Evil ☣️‏
@robobeau
Replying to @neiltyson
@neiltyson Last one: Where do Construction Workers go to get a drink? The Rebar.
7:51 AM - 19 Jun 2014
 
Reddit—Jokes
To my knowledge this is original…
submitted October 17, 2017 by Matttagram89
Where do construction workers go to drink?
The Rebar