It's one of those jokes that's so funny it sort of gives you a slight boner. Like the first time you heard "jizz in my pants", you were so entertained by it that you sort of got a mind boner - just a very pleasant feeling.
It's also going the extra mile to proclaim love for a joke. Usually people just caps-lock lmao to show their love. This really goes the extra effort - it's 4 extra letters. Plus, it's a ridiculous image when you literally think about it.
"Dude I'm so fucked."
"Why?"
"I guess, like, maybe, my mom, like, just found hella nude pictures of myself that I took for Playgirl."
adj, noun. the word said when someone ims, texts, facebook chats LMAO. This word is how to pronounce it!
or used in sentence describing something.
pronouced as LE- M- OW
he lemowed cause she fell.
and he was like lemow, and it was not lemow worthy bud.
*boy fails test*
hahaha lemow, fail.