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it means laughing my nut sac off, primarily used by boys
"hahaha LMNSO,"
"what does that mean?"
" laughing my nuts sac off!"
LMNSO by JEFEN October 26, 2020
Related Words
lmnso • LMSO • lmno • lmnop • LMFSO • Lanson • lenso • lmaso • LMNBO • lmnotptyv
the fastest part of the alphabet
lmnop:

Kindergartener: J, K, elemenopee, Q R, S,,,
lmnop by GrimacingTomato June 2, 2015
a very tall guy with a hot body but can also be shy
that tall dude over there is a lanson
Lanson by azngurlz December 31, 2010
A wild animal who is smart but hides it
lonson is smart but wild.
lonson by lonson May 11, 2018
Laugh my cotton socks off
Man: Why'd the chicken cross the road? To get to the other side!
Woman: Lmcso
Lmcso by Satan with a Perm May 3, 2010
Simple, it means Laugh My Nose Off👃🏽.
*Someone says something really funny*
Me: Lmno
Lmno by bracefacebaby_3 November 15, 2019
More from Urban Dictionary

pajama casual 

Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.
pajama casual by jrod-knows March 31, 2020
Word of the Day on October 14, 2026

funflation 

The recent boom in consumer spending on entertainment and experiences with a high demand running up the cost of enjoying of those experiences.
I’m trying to go to this Taylor Swift concert but the funflation has made it so impossible for me to afford tickets.
funflation by Dfree523 November 17, 2023
Word of the Day on October 13, 2026
A US deep south term for an alligator. Usually used in the Cajun dialect.
Take the big pirogue, I saw a huge swamp dog out there earlier.
swamp dog by Crystal Ambrose May 22, 2006
Word of the Day on October 12, 2026

Throat Sweats 

The feeling and build up in your mouth/throat of saliva that sometimes accompanies nausea.
Oh man those burritos gave me the throat sweats, I hope I don’t have food poisoning.
Throat Sweats by TacoFings420 April 23, 2024
Word of the Day on October 11, 2026
Being ignored by someone when making a statement or asking a question. Also known as blanked and turfed.
Person 1: Did u watch ** last nite?
Person 2:......
Person 3: O no u got aired!
aired by Pietro February 9, 2005
Word of the Day on October 10, 2026
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