Similar to the prison joke:
A newbie is in prison and he hears one guy yell out 29! And everybody bursts out laughing. Another man gets up and yells 96! And everyone again bursts out laughing. So he asks the guy next to him, what’s going on? The man replies, these guys have been in here so long that they just have numbers for all the jokes.
So the newbie gets up and yells 134!
The whole place goes nuts with laughter, people are falling off their chairs, it’s crazy. The newbie turns to the guy next to home and asks what on earth just happened?!
With tears of laughter still running down his face the guy replies: we’ve never heard that one before!!