r/explainlikeimfive is a subreddit with 23.7M members. The community frequently discusses eli5, hard time, water, football, and data centers, and they frequently recommend/review cleaning products, antiperspirant, and birth control options, and the most common flair used is other, biology, technology, economics, and chemistry.
Explain Like I'm Five is the best forum and archive on the internet for layperson-friendly explanations.
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Popular Topics in r/explainlikeimfive
#1
Eli5
41 posts
#2
Hard Time
6 posts
#3
Water
4 posts
#4
Football
3 posts
#5
Data Centers
3 posts
#6
Relationships
2 posts
#7
Computers
2 posts
#8
Job_search
2 posts
#9
Animals
2 posts
#10
Technology
2 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
Other
: "ELI5: what information do dogs receive from smelling pee on various surfaces and what do they typically want to do with that information?"
41 posts
#2
Biology
: "ELI5: How Has Sexual Reproduction Beat Asexual Reproduction?"
28 posts
#3
Technology
: "ELI5: What can you actually DO with a complete fruit fly brain connectome?"
21 posts
#4
Economics
: "ELI5: Why are data centers a bad thing?"
9 posts
#5
Chemistry
: "ELI5: How do food manufacturers calculate expiry dates?"
8 posts
#6
Engineering
: "Eli5 What prevents trains from constantly derailing or tipping over?"
8 posts
#7
Physics
: "ELI5 Why does the melted part of a candle go all the way to the edge of the glass, but the unmelted part doesn’t?"
6 posts
#8
Planetary Science
: "ELI5: Wind. What is it, how does it form? Why does it form?"
4 posts
#9
Mathematics
: "ELI5: Why does 1/10 equal to 0.1"
2 posts
Member Growth in r/explainlikeimfive
Yearly
+389k members(1.7%)
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Last updated: September 15, 2026