“@mmschocolate have an exoskeleton, like an insect. @twix have an endoskeleton, like a human. @reeses cups have no skeleton, like a slug. Enjoy!” was posted on Twitter by Billy Goldfang on September 18, 2019. “Twix have an endoskeleton and M&M’s have an exoskeleton” was posted on Reddit—Showerthoughts on October 17, 2022.
   
Some people believe that the hard shells on M&M’s protect them, and that the “five-second rule” applies when they are dropped on the floor. (That is, food picked up within five seconds is OK to eat. This has often been shown to be a myth.)
   
“I’m firmly convinced that the hard candy shell on M&M’s make them exempt from the five second rule or any of its variants” was posted on Twitter by Matt Morrison on December 23, 2013. “M&M’s candy coating is an effective germ barrier that nullifies the five second rule” was posted on Twitter by His Royal Heinous on January 17, 2014. “the 5 second rule doesn’t apply to m&m’s because they have an exoskeleton” was posted on Twitter by “jess is probably birding” on April 16, 2020. “@nytimes: the five-second rule is an urban legend, followed more by men than women. Throw out the dropped M&M. http://nytimes.com/2016/09/20/science/five-second-rule.html” was posted on Twitter by Tony Wasserman on September 19, 2016.
   
         
Wikipedia: Twix
Twix is a caramel shortbread chocolate bar made by Mars, Inc., consisting of a biscuit applied with other confectionery toppings and coatings (most frequently caramel and milk chocolate). Twix are packaged with one, two or four bars in a wrapper.
 
Wikipedia: M&M’s
M&M’s (stylized as m&m’s) are multi-colored button-shaped chocolates, each of which has the letter “m” printed in lower case in white on one side, consisting of a candy shell surrounding a filling which varies depending upon the variety of M&M’s. The original candy has a semi-sweet chocolate filling which, upon introduction of other variations, was branded as the “plain, normal” variety.
   
Twitter
$hells $hawty
@Gravity_Blonde
Marcos had to describe an M&M and he said it had a hard outside like an exoskeleton. Haha dying.
11:41 AM · Apr 10, 2013·Twitter for Android
     
Twitter
Matt Morrison
@mattmorrison268
I’m firmly convinced that the hard candy shell on M&M’s make them exempt from the five second rule or any of its variants.
12:06 PM · Dec 23, 2013·Twitter for Mac
   
Twitter
His Royal Heinous
@8rustystaples
M&M’s candy coating is an effective germ barrier that nullifies the five second rule.
10:11 AM · Jan 17, 2014·Twitter for iPhone
 
Twitter
raq🌙
@RachelNicole427
Val just equated that the hard chocolate on the outside of an M&M to the exoskeleton of a bug and freaked out…
11:07 PM · Dec 18, 2015 from Narragansett, RI·Twitter for iPhone
     
Twitter
Tony Wasserman
@twasserman
.@nytimes: the five-second rule is an urban legend, followed more by men than women. Throw out the dropped M&M. http://nytimes.com/2016/09/20/science/five-second-rule.html
1:40 PM · Sep 19, 2016·Twitter for Mac
 
Twitter
Shannon
@akomododragon
My favorite part of the m&m is the exoskeleton.
8:15 PM · Jul 12, 2018·Twitter for Android
 
Twitter
Billy Goldfang
@BillyGoldfang
@mmschocolate have an exoskeleton, like an insect. @twix have an endoskeleton, like a human. @reeses cups have no skeleton, like a slug. Enjoy!
4:21 PM · Sep 18, 2019·Twitter Web App
       
Twitter
Cassie Beasley
@beasleywrites
M&M’s are just chocolate chips with an exoskeleton.
And you can easily buy better tasting chocolate chips.
Quote Tweet
Liz Dueweke 🫠
@LizDueweke
·
Sep 21, 2019
One has to go. Forever. Which one do you choose?
8:53 PM · Sep 21, 2019·Twitter Web App
 
Twitter
jess is probably birding
@jematyas
the 5 second rule doesn’t apply to m&m’s because they have an exoskeleton
1:48 AM · Apr 16, 2020·Twitter for iPhone
   
Twitter
russell☁️
@russissippi
[about to invent m&m’s]
“what if this chocolate had an exoskeleton”
1:52 AM · Dec 27, 2020·Twitter for iPad
 
Reddit—Showerthoughts
Posted by u/Aughilai October 17, 2022
Twix have an endoskeleton and M&M’s have an exoskeleton
 
Twitter
Shower Thoughts
@ShowerThoughtsy
Twix have an endoskeleton and M&M’s have an exoskeleton #ShowerThoughts
1:54 PM · Oct 17, 2022·IFTTT