When one writes "801", it can be read as "yaoi".
8 - comes from "ya" in the japanese number "8", when read as 'yattsu'.
0 - comes from the roman letter "O."
1 - comes from the "I" in the japanese number for "1", 'ichi'.

The word can be thought of as shorthand, or a code word for yaoi.
libra3:
Hey LuvEX, did you read the last yaoi comic in BL Gold?

LuvEX: Hey, use 801 instead plz, my mom's in the room.

by Michellemakrell August 8, 2008
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The area code representing the Wasatch front of Utah (upwards of 80% of the population of utah, spanning along the western base of the wasatch mountains). Often voiced by locals as a prideful indicator of their home territory, or often as a shorthand reference of the wasatch front area.
Back in the 801, visiting my sister wives
by SwiggitySwoot October 24, 2015
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that's just a number are y'all stupid or something
by likcy_ May 11, 2018
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801….❤️
by Wanderlust_721 September 19, 2023
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A mysterious organ formed as a hole like pussy between a sissy man's balls and anus in some Chinese and Japanese erotica, fanfiction and comic, usually appreciated by fangirls. In some words, 801 are all three organs, but emphasize the 0 between 8 and 1. Another term of 801 is boy pussy.
Balls as 8, assgap as 1, the additional 0, called 801, is a great fantasy to a fujoshi 'cause it can squirt and bear child like hers.
by Phosmac March 9, 2020
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Rule 801 is a rule of the internet that reads as follows: "For every two male characters, there is a slash of them."
Person A: "What? You mean fujos have even shipped Tom and Jerry together?
Person B: "Rule 801, duh."
by SandBun November 7, 2017
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When you want to enter the most awesome state, but the developers won’t allow strong bases in because the state has reached its maximum awesome level. Often associated with state 801.

“This state a strong, and powerful except for Ride. We should stop other cool cats and kittens from joining in so it doesn’t become so awesome that it ruin all other states!” -Developers
“Wow, I was all ready to bring my base, then I got 801’d ” - said everyone

“The developers really know how to screw over the good players, I just got 801’d ” said all the Cool people.

“Man, this state is awesome, but how did Ride get in here?... not because he would be 801’d , but because this state is awesome, and he is... Ride” - Everyone
by Austin.02 May 15, 2020
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