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When something so uberly and 1337tly funny is said, it causes someone to laugh so hard that they get lymphoma. Cancer of the lymph nodes due to lmfaoma, basically.
As we all know, lmfao means "laughing my f***ing ass off", along with the "ma", it has the potential to be a meme.
"Damn, when that fat kid fell on the ice skating rink because he dropped his nachos, I think me and my friends got lmfaoma!
lmfaoma by gaylord fokker February 26, 2007
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LMFAOAOAOSOAOAOAHSNEKNSHDOSNEBKSOWOSHSHDNEKLWMEHRIDJE 

* something funny *
Her extra ass : LMFAOAOAOSOAOAOAHSNEKNSHDOSNEBKSOWOSHSHDNEKLWMEHRIDJE

Lmfaomybbihsmomgpssft 

Laughing my fucking ass off my body, but it hurts so much Oh my god, please stop sending funny things
When someone sends something so funny it surpasses lmfao, you send: Lmfaomybbihsmomgpssft

lmfaoasmp 

i was talkin to homie when he busted a joke and i lmfaoasmp so i ran to the bathroom to clean it up
lmfaoasmp by quint1234 November 15, 2009

LMFAOASDFGHJKLKJF 

what u write when ur bsf sends u an unfunny tiktok
friend: LMAO GIRL CHECK THIS OUT *sends vid*
other friend: PLS- LMFAOASDFGHJKLKJF

lmfaomaniac 

A person who appears to be extremely happy as they are laughing a lot. Out loud. They are in fact lonely insomniacs with nothing interesting to say and so continue online conversations with lol, rofl, pmsl and lmfao.
Whale Oil Beef Hooked says:
mar, i need an example for uban dictionary "lmfaomaniac"
Whale Oil Beef Hooked says:
let us create this example through improvisation-
Whale Oil Beef Hooked says:
hello
mar says:
hello also
Whale Oil Beef Hooked says:
lol
mar says:
lmao
Whale Oil Beef Hooked says:
my hamster died last night
mar says:
LMFAO!
lmfaomaniac by Thomas McP March 5, 2007

Lmaomammal 

Ever since the internet was created, many have pondered relentlessly on a single subject. It rose above all the other web circulating questions,
"What idiot thought it would be cool to invent the word emo?"
"Why is facebook so addicting?"
and even,
"What's TSC?"

Because this question was a question of epic porportions. It was a question that used to stump even the nerdiest of internet gods.

It strikes fear into the hearts of many.
"What is a lmaomammal?"

But today, that question will be answered. The lmaomammal originated when Brooke, internet twin of Evan, (who's relationship is innocent of course) typed 'lmao' in response to a likely suggestive comment of Evan. Only this wasn't any 'lmao.' The lmao was followed by a sequence of letters that shot the word 'mammal' into the eyes of many.

Then became the birth of the lmaomammal. A lmaomammal is a cross between a butterfly, a dog, and a dinosaur. The only photographed lmaomammal is hidden and currently owned by the twins. Since the birth of the species, it has been rumoured that the lmaomammals are extremely endangered, due to lack of sightings.
Solving the problem of the endangered lmaomammals was difficult, because out loud, lmaomammal is pronounced with every letter silent.
A Neopets.com account was created in honor of the first lmaomammal, and can be found if searched.

It is protected by "The most unsolvable password in internet history."

So there you have it. If you one day come across the beautiful lmaomammal, why not try to pet it? They don't bite, because the lmaomammal's defense is that it's bloodstream contains traces of LSD. This confuses the predator after a single bite, causing them to pursue an inaminate object instead.
"What's a lmaomammal?"

"-Sigh-"
Lmaomammal by Brooke. September 12, 2007