“I heard a really funny joke at our mandatory meeting at work” (joke)

When another telling of a joke doesn’t work, “I guess you had to be there” is what the joke teller often says. “Did you hear the one about the mandatory meeting? I guess you had to be there” was posted on Twitter  by “choke” on January 26, 2015:
 
Another joke about a mandatory meeting was told by Ray on Twitter on March 21, 2015:
 
I got a joke for you. Mandatory meeting.
”...”
Well?
“I don’t get it.”
Huh. I guess you had to be there.

 
“I heard a really funny joke at our mandatory meeting at work. But when I retell it, no one laughs. I guess you had to be there” was posted on Reddit—Dad Jokes on July 10, 2018.
 
       
Twitter
choke
@chokeules
Did you hear the one about the mandatory meeting? I guess you had to be there.
12:59 PM - 26 Jan 2015
   
Twitter
Ray
@SirEviscerate
I got a joke for you. Mandatory meeting.
”...”
Well?
“I don’t get it.”
Huh. I guess you had to be there.
8:26 PM - 21 Mar 2015
 
Reddit—Dad Jokes
I heard a really funny joke at our mandatory meeting at work. But when I retell it, no one laughs. (self.dadjokes
submitted July 10, 2018 by porichoygupto
I guess you had to be there.
     
Twitter
keepingitcreel
@Keepingitcreel
I heard a really funny joke at our mandatory meeting at work. But when I retell it, no one laughs. I guess you had to be there.
11:11 PM - 9 Jul 2018 (Posted after the above.—ed.)
 
Twitter
Shit Jokes
@ShitJokes
I have a really funny joke about our mandatory meeting at work, but whenever I retell it, no one laughs.
I guess you had to be there.
6:52 AM - 10 Jul 2018
 
Reddit—3amjokes
I told a joke to my friends about a mandatory meeting, but no one laughed. self.3amjokes
Submitted September 6, 2018 by porichoygupto
I guess you had to be there.