LMMO 

Laughing my mask off.

George says he doesn’t think Covid-19 is real. LMMO!

LMMO by nickst May 8, 2020

lmmo 

Laughing My Mustache Off. Used online or in person.

When extreme hilarity causes the facial hairs of the philtrum to jump off.

Mario: Mama mia, I have fallen into a large green pipe!
Luigi: LMMO!

And thus, Luigi and Mario had one less thing in common.

lmmo by dreakaye November 7, 2011

LMMO 

Laughing my muscles off

Used by muscular men as a brief acronym to denote great amusement/laughter in chat conversations.

Frank: wtf is LMMO
Tito: Something you ain't got Frank
Jake: LMMO
Alan: #strongmanlanguage

Lmaololrotf

LMMO by Jakerandy June 19, 2017

LMMO 

LMMO — Laughing My Mask Off

Acronym, used in social media and interpersonal messaging, modeled after the long established 'LMAO' — Laughing My Ass Off.

This exhortation was coined 28 Jul 2002 in the midst of the worldwide COVID-19 pandemic, when surgical or industrial (e.g. N95 or N99) protective masks were widely in use, and mandatory in some jurisdictions or individual shops and public places.

It is an ironic variant of LMAO.

▶ Man, my neighbourhood barber shops have been closed for months. I look like Chewbacka after a three-day binge.

◀ LMMO 🤣

LMMO by [Word] July 29, 2020

lmmo 

laughing my mittens off

Nargis: dude are you wearin mittens?
Ramjad: yeh and you just said somethin funny so I'm lmmo!

lmmo by AlllllP March 28, 2007

Lmmo 

1. Laughing my maps off.
In a moment of extreme hilarity, a map bearing person might find themself laughing so hard that their maps come off.

Mary: Hey, my boyfriend's name is Ignatius!
Anne: Lmmo!!

Lmmo by Scotlyn Smuggletea August 17, 2009

LMMO 

From the 2020 Pandemic, the new LOL, as defined by u/Atomic_Blanket on Reddit on 10/1/2020.

Laughed My Mask Off

LMMO that was funny!

LMMO by Bakemono October 1, 2020