An internet rule popularized via motivational poster that states that something needs more desu, no exceptions.
Person A: We need more pizza, desu.
Person B: What?
Person C: Rule 41.
by Kagi Omiya February 2, 2009
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The widely accepted rule of mentality that witty retorts, good comebacks, and the right thing to say will always come ten minutes or more after you need it.
Bob: At least somebody will get in bed with *me*.

Joe: Uh...erm.... STUPIDFACE!

*ten minutes later*

Joe: "At least my sister doesn't whore it up with me". Genius. Why didn't I get this when I needed it?

Carl: Rule 41.
by Alcnor March 27, 2009
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Rule 41 of the internet: No matter what it is it is someone's fetish. No Exceptions.
(facebook status) OMG!!! I love Disney Movies!!!
(commenter one) Rule 41.
(OP's comment) ???
(commenter two) that's sick...
by wrtbak March 16, 2010
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when you are just plain awesome, you win even when you lose
BOOM! HEADSHOT!
guyfighting in iraq: wow, i'm glad i'm awesome or else that 50.Cal might have made a dent. Hooray for Rule 41 !
by sethkasketch December 26, 2008
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Rule 41. The forty first rule of the internet that states if it exists, there will be an isekai of it.
"ANIME GODS!!! Why is 2023 line up currently ISEKAI EVERYTHING!!! My GOD, Japan~! I get it Isekais are cool but like...We have an Isekai to EVERYTHING. Pharmacy, Farming, Campfire, Handyman, gender bender both ways, literally a SWORD they are making an isekai to literally anything that exists. It's rule 34 of Isekais. If it exists there's an isekai of it."

"It's Rule 41, man."
by Predestination October 17, 2023
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Not really a rule,but mostly anything said on the internet will be turned sexual
Guy 1:This thing can hold anything

Guy 2:You mean....everything??

Guy 1:Yes..everything

Guy 2:🥺🤩🤩

Guy 1:I will never escape rule 41 😪😪😪
by Syleha October 6, 2022
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