“Dismay: to insult the fifth month”

The word “dismay” has nothing to do with the month of May, but there are jokes.
   
“Dismay: To insult the 5th month” was posted on the newsgroup alt.humor.puns on March 23, 2005. “Dismay. Verb. To insult the fifth month” was posted on Twitter by Glinsman Weller on August 8, 2014. “Dismay = Someone who makes a negative comment about the fifth month of the year” was posted on Twitter by Uxbridge English Dic on October 31, 2014.
     
“The government just banned the fifth month of the calendar year. Everyone was dismayed” was posted on Reddit—Jokes on February 23, 2020. “Someone removed the 5th month from all my calenders. I am really dismayed” was posted on Reddit—Dadjokes on March 1, 2021.
   
“It’s June 1st! We’re all dismayed” is a related joke.
     
           
Wikipedia: May
May is the fifth month of the year in the Julian and Gregorian calendars and the third of seven months to have a length of 31 days.
(...)
May (in Latin, Maius) was named for the Greek Goddess Maia, who was identified with the Roman era goddess of fertility, Bona Dea, whose festival was held in May. Conversely, the Roman poet Ovid provides a second etymology, in which he says that the month of May is named for the maiores, Latin for “elders,” and that the following month (June) is named for the iuniores, or “young people” (Fasti VI.88). 
 
Google Groups: alt.humor.puns
3/23 Puns  
Tim Bruening
Mar 23, 2005, 12:08:29 PM
(...)
Dismay: To insult the 5th month.
     
Twitter
Chris Miller
@MrCCMiller
I once spoke disparagingly of the fifth month of the year. To my dismay.
2:18 AM · Sep 15, 2010·ÜberSocialOrig
 
Twitter
Glinsman Weller
@GlinsmanWeller
@TheSTMagazine #stmindgame Dismay. Verb. To insult the fifth month
9:20 AM · Aug 8, 2014·Twitter Web Client
   
Twitter
Uxbridge English Dic
@UxbridgeEngDic
Dismay = Someone who makes a negative comment about the fifth month of the year. #uxbridgeenglishdictionary #isihac
6:17 AM · Oct 31, 2014·Twitter Web Client
         
Twitter
Bruce Schneider
@BruceSchneider
It’s the fifth month of the year. Do not be dismayed. #humor #humour #pun #may
12:05 PM · May 1, 2015·Twitter Web Client
   
Twitter
Papazilla667ToBe!
@Scottzilla667
I was dismayed when I found out my calender didn’t have the fifth month…
Russian Hackers: Да, это смешно! Ебать отправь это!
3:56 PM · Apr 5, 2017·Twitter for Android
 
Twitter
gender obfuscation party
@purrgesterone
*5th month of the year ends*
I am…
...dismayed
5:13 PM · Jun 1, 2017·Twitter for Android
 
Reddit—Punny
Posted by u/constantclimb September 29, 2018
I once visited a town where they removed the fifth month of the year from all their calendars…
...much to my dismay
   
Reddit—Jokes
Posted by u/xnphls February 23, 2020
The government just banned the fifth month of the calendar year.
Everyone was dismayed.
   
Twitter
Punbible
@thepunbible
The government just banned the 5th month of the calendar year.
Everyone is dismayed.
11:56 AM · Mar 31, 2020·Twitter for iPhone
   
Twitter
Dennis Staples
@gosporttomarlow
Replying to @RobHanlon1958
The government just banned the fifth month of the calendar year.
Everyone was dismayed.
8:30 AM · Apr 24, 2020·Twitter Web App
 
Twitter
James Baker
@JB_MusicComic
Politicians are thinking about removing the 5th calendar month from the year.
Everyone will be dismayed…
4:12 AM · Nov 4, 2020·Twitter for iPhone
 
Reddit—Dadjokes
Posted by u/basseldarwich_ March 1, 2021
Someone removed the 5th month from all my calenders
I am really dismayed
     
Twitter
Dad Jokes
@Dadsaysjokes
Someone removed the 5th month from all my calenders.
I am really dismayed.
3:42 PM · Mar 1, 2021·Twitter for iPhone
 
Reddit—Jokes
Posted by u/SuperNova7039 March 2, 2021
Someone removed the fifth month from the calendar
I was really dismayed