“Just heard they’re changing my mobile phone number to Roman numerals!? I’m LIVID” is a joke that was posted on Twitter by Morris Dutchley the Comic Book on September 28, 2011. “My wife says I spend far too much time devoted to my study of Roman Numerals. I’m LIVID” was posted on Twitter by Beano on August 20, 2014.
 
“I can’t remember what 51, 6 and 500 are in Roman numerals… fucking livid” was posted on Reddit—Jokes on February 7, 2015. “I can’t remember how to write 1, 1000, 51, 6 and 500 in Roman numerals. I M LIVID” was posted on Reddit—Jokes on March 4, 2017. The joke has been printed on many images.
   
Other Roman numerals jokes include “I, for one, like Roman numerals,” “I struggle with Roman numerals until I get to 159. Then it just CLIX,” “I went to a Roman bathroom on the 6th floor. Yes, it was the VI P room,” “Roman numerals to be phased out—not on my watch,” “The cost of joining the Roman Numeral Society was exactly $499. I didn’t have ID” and “The Roman numerals for forty (40) are XL” (i.e., weight gain at 40 makes one Xtra Large),
 
         
Twitter 
Michael Golvach
@mikegolvach
The great thing about roman numerals is that they double as words-This has been a civic minded post. I’m livid. Get the picture, or too dim?
4:10 AM - 20 May 2011
   
Twitter
Morris Dutchley the Comic Book
@Dutchtica
Just heard they’re changing my mobile phone number to Roman numerals!? I’m LIVID.
9:55 PM - 28 Sep 2011 from Amsterdam, The Netherlands
   
Twitter
StuartSingletonWhite
@StuartSW
BT have just been in contact to tell me they are changing the phone numbers in my area to Roman numerals! I’m LIVID.
8:08 AM - 5 Jul 2014
 
Twitter
Beano
@BeanoOfficial
My wife says I spend far too much time devoted to my study of Roman Numerals. I’m LIVID.
7:03 AM - 20 Aug 2014
     
Reddit—Jokes
I can’t remember what 51, 6 and 500 are in Roman numerals… fucking livid
submitted February 7, 2015 by BookerGinger
 
Twitter
Malcolm Downs
@malcolmdowns
I’m furious trying to remember what 51, 6 and 500 are in Roman numerals…
In fact I’m livid
2:22 AM - 7 Feb 2015
     
Reddit—Jokes
I can’t remember what 51, 6 and 500 are in Roman numerals…
submitted December 18, 2016 by madazzahatter
...fucking livid…
 
Reddit—Jokes
I cannot remember what 51, 6 and 500 are in Roman numerals.
submitted January 14, 2017 by Bolognanipple
I’M LIVID
 
Reddit—Jokes
I can’t remember how to write 1, 1000, 51, 6 and 500 in Roman numerals
submitted March 4, 2017 by roque72
I M LIVID
     
Reddit—Jokes
I Can’t Remember What 51, 6, & 500 Is In Roman Numerals
submitted May 29, 2017 by unknownspecies_
I’m LIVID
   
Reddit—Jokes
I can’t remember how to write 1, 1000, 51, 6 and 500 in Roman numerals
submitted April 28, 2018 by SenorDuck96
I M LIVID
 
Reddit—Puns
I can’t seem to remember how to write 1, 1000, 51, 6, or 500 in Roman numerals… (self.puns)
submitted June 17, 2018 by A35J
IM LIVID
 
Reddit—Jokes
I failed my math exam because I couldn’t remember how to write 1, 1000, 51, 6, and 500 as Roman numerals
submitted July 31, 2018 by Alec935x2
IM LIVID