“The trouble with rugby is that it’s very repetitive, when you’ve seen one ruck you’ve seen a maul” was posted on Twitter by Tony Cowards on June 19, 2010. A “maul” is a set of moves in rugby. “Seen a maul” is a pun on “seen them all.”
   
“Once you’ve seen one rugby joke, you’ve seen a maul. #Rugby” was posted on Twitter by JR on September 26, 2010. “If you’ve seen one rugby match, you’ve seen a maul” was posted on Twitter by Dynamyq Wigwam on April 15, 2012. “Once you’ve seen one rugby joke… You’ve seen a maul” was posted on Reddit—Jokes on December 1, 2017.
         
Similar jokes include “If you’ve seen one bear attack, you’ve seen a maul” and “When you’ve seen one shopping center, you’ve seen a mall.”
 
 
FloRugby
Rugby Rules 101: What Is a Maul?
The maul is one of the most effective set moves in rugby. What is it and how is it so effective?
May 19, 2020 by Alex Rees
(...)
A maul occurs when a player with the ball goes into contact with a defender, and while both players remain on their feet, at least one more player from the attacking team joins the contact. At this point a maul is formed, and looks sort of like a scrum except with the ball in the player’s hands instead of on the ground.
   
Twitter
Tony Cowards
@TonyCowards
The trouble with rugby is that it’s very repetitive, when you’ve seen one ruck you’ve seen a maul.
9:13 AM · Jun 16, 2010·Twitter Web Client
   
Twitter
JR
@cymru_lfc
Once you’ve seen one rugby joke, you’ve seen a maul. #Rugby
11:33 AM · Sep 26, 2010·Twitterrific for iOS
   
Twitter
BIG_BEAR_F1
@BIG_BEAR_F1
Once you’ve seen one rugby joke, you’ve seen a maul.
2:17 PM · Sep 26, 2010·Osfoora for iOS
   
Twitter
Dynamyq Wigwam
@dynamyq
If you’ve seen one rugby match, you’ve seen a maul
12:07 PM · Apr 15, 2012·Twitter for BlackBerry®
   
Twitter
Iwan Thomas MBE
@Iwanrunner
Once you’ve seen one rugby joke, you’ve seen a maul…....... #rubbishjokes
12:59 PM · Nov 26, 2012·Twitter for iPhone
   
Twitter
#TheWorldsWorstRugbyClub
@PontycynonRFC
I was going to tell a rugby joke today but once you’ve seen one you’ve seen a maul !!!
#rugby #rugbyfamily #rugbyunion
1:40 AM · Dec 23, 2015·Twitter for Android
   
Twitter
Sir Richie McCaw
@RichieHMcCaw
You’ve seen one rugby ruck, you’ve seen a maul… (sort of)
2:39 AM · Feb 1, 2017·Twitter Web Client
   
Twitter
The Dad Jokes DadaBase
@dadjokesdb
Once you’ve seen one Rugby Union joke you’ve seen a maul…...
3:08 AM · Feb 1, 2017·Twitter Web Client
 
Reddit—Jokes
Posted by u/dirtdivr December 1, 2017
Once you’ve seen one rugby joke…
You’ve seen a maul.
 
Twitter
Gerraint®
@Gerraint
Once you’ve seen one rugby joke…
You’ve seen a maul.
#punoclock #dadjokes
9:01 AM · Mar 16, 2019·Hootsuite Inc.
 
Twitter
The Dad Joke Man
@DadJokeMan
I’m up early ready to watch #ENGvNZL in the #RugbyWorldCup trying to think of an original new rugby related joke…
But if you’ve seen one, you’ve seen a maul…
3:34 AM · Oct 26, 2019·Twitter for iPhone
 
Twitter
Mylor James
@MylorJames
When you’ve seen one rugby joke, you’ve seen “a maul” (em all)
4:12 AM · Apr 22, 2021·Twitter for iPhone