r/explainlikeimfive is a subreddit with 23.6M members. The community frequently discusses eli5, how, why, duck and cover, and cold, and they frequently recommend/review cleaning products, antiperspirant, and birth control options, and the most common flair used is biology, other, technology, economics, and engineering.
Explain Like I'm Five is the best forum and archive on the internet for layperson-friendly explanations.
Don't Panic!
Popular Topics in r/explainlikeimfive
#1
Eli5
504 posts
#2
How
9 posts
#3
Why
7 posts
#4
Duck And Cover
6 posts
#5
Cold
5 posts
#6
Calories
5 posts
#7
Technology
4 posts
#8
Music
4 posts
#9
Ai
3 posts
#10
Semiconductor
3 posts
Products Discussed in r/explainlikeimfive
Cleaning Products
7 reviews
#1
Gain
2.0★ from 1 review
#2
7th Generation
4.0★ from 1 review
#3
Tide
4.0★ from 1 review
Antiperspirant
5 reviews
#1
Aluminum Free
3.0★ from 2 reviews
#2
Aluminum-free Deodorant
3.0★ from 1 review
#3
Aluminum-based Deodorant
2.0★ from 1 review
Birth Control Options
2 reviews
#1
Condoms
4.0★ from 1 review
#2
Vasalgel
4.0★ from 1 review
Flair Used in r/explainlikeimfive
#1
Biology
: "ELI5: How is it that almost all complex species have the same order of organs on the face; Eyes, nose and then mouth, in that same order?"
60 posts
#2
Other
: "ELI5: Why don't they use a stop clock in soccer?"
36 posts
#3
Technology
: "ELI5: What does daemon mean in computing?"
29 posts
#4
Economics
: "ELI5: Why is Monaco such an obscenely wealthy country despite not having some highly valuable natural resources like oil or some important production capabilities like building of semiconductor chips?"
19 posts
#5
Engineering
: "ELI5: How do engineers trust that giant airplanes, bridges, and skyscrapers won’t suddenly fail under years of stress and vibration?"
19 posts
#6
Physics
: "ELI5: Why doesn't the Sun just burn all at once?"
18 posts
#7
Chemistry
: "ELI5: Why did plastic replace so many traditional materials, and how did that success create microplastics concerns?"
9 posts
#8
Mathematics
: "ELI5: How can statisticians look at only a small sample of products and mathematically decide whether an entire batch is good or faulty without checking every single item?"
6 posts
#9
Planetary Science
: "ELI5: Why doesn't the ocean drain into the soil?"
4 posts
Member Growth in r/explainlikeimfive
Yearly
+330k members(1.4%)
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About
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Last updated: June 20, 2026