Mayonnaise has nothing to do with the month of May, but there are jokes.
           
“MAYonnaise, more like JUNEonnaise” was posted on Twitter by Aron on June 7, 2012. “If you eat mayonnaise in April, is it aprilonnaise?” was posted on Twitter by The Constant State of Ponder on April 3, 2018. “Mayonnaise implies the existence of Juneonnaise, Julyonnaise & so forth imo” was posted on Twitter by Bacon, Lettuce & Potato on August 7, 2019.
       
“What do you call mayonnaise left out for a month? Juneonnaise” was posted on Twitter by QwazyQuokka on August 26, 2019. “What was invented before mayonnaise? Aprilonnaise” was posted on Reddit—Dadjokes on November 8, 2020. “I couldn’t find the mayonnaise until I looked between the Aprilonnaise and Juneonnaise” was posted on Reddit—Dadjokes on April 21, 2023.
     
   
Twitter
Aron
@aronmoreloose
MAYonnaise, more like JUNEonnaise.. Am I right? ..because we’re in June, not May. #LOL Months are Fun. #Jokes #Laughing #SpontaneousHugging
2:50 PM · Jun 7, 2012
   
Twitter
baydu
@Baydu
Mayonnaise. Juneonnaise. Julyonnaise.
5:47 AM · Apr 11, 2013
 
Twitter
Eliane
@baaklini_eliane
MAYonnaise la2 APRILonnaise @NekatBeykha
✌✌
2:53 PM · May 2, 2013
     
Twitter
Kelly-Marie Price
@pink_laydee86
Why is it mayonnaise? Why not febuaryonnaise or juneonnaise? #helmans #thoughtswheninshower
4:40 PM · Oct 6, 2013
 
Twitter
The Constant State of Ponder
@untelligent_
If you eat mayonnaise in April, is it aprilonnaise?
7:19 PM · Apr 3, 2018
     
Twitter
Mike Kevan
@MikeKevan
What comes after Mayonnaise? Juneonnaise?
Ha. Is that something?
4:09 PM · Apr 4, 2019
   
Twitter
Bacon, Lettuce & Potato
@DominicCaruso1
Mayonnaise implies the existence of Juneonnaise, Julyonnaise & so forth imo
6:51 PM · Aug 7, 2019
 
Twitter
Claire Behind The Hair Blue Tick
@urmumsausername
Mayonnaise implies the existence of Januaryonnaise
Februaryonnaise
Marchonnaise
Aprilonnaise
Juneonnaise…
And all the other monthsonnaise.
3:09 PM · Aug 26, 2019
   
Twitter
QwazyQuokka
@Girlie4
What do you call mayonnaise left out for a month?
Juneonnaise
4:57 AM · Aug 26, 2019
   
Twitter
A Bearer Of Dad News
@HomeWithPeanut
Parent’s Log, day 1520. I’ve been awake since 4:30 am. With BOTH kids.
“Mayonnaise implies the existence of Juneonnaise” is the most clever thing I can come up with at the moment.
And it’s fucking Monday so screw you if you didn’t find it witty.
7:21 AM · Jan 27, 2020
 
Reddit—Dadjokes
Posted by u/supergush November 8, 2020
What was invented before mayonnaise?
Aprilonnaise.
     
Twitter
Rob FM²
@RobFMDetroit
Mayonnaise implies the existence of Januaryonnaise, Februaryonnaise, Marchonnaise, Aprilonnaise, Juneonnaise, Julyonnaise, Augustonnaise, Septemberonnaise, Octoberonnaise, Novemberonnaise and Decemberonnaise
6:43 PM · Mar 3, 2021
     
Twitter
Unstoppablo
@aquele_pablo_la
Remember this is the only month you can eat Mayonnaise.
Next month it will be Juneonnaise
9:11 PM · May 7, 2021
 
Twitter
David Fuhr 🇺🇦
@0xdhf
What comes before and after mayonnaise?
aprilonnaise and junonnaise. https://twitter.com/andreasdotorg/status/1474385332816723976
10:04 AM · Dec 24, 2021
 
Reddit—Dadjokes
Posted by u/Nebocsid April 21, 2023
I couldn’t find the mayonnaise
Until I looked between the Aprilonnaise and Juneonnaise.