"lol-in" is a term associated with the act of someone moving all their chips into a pot with something very weak, vulnerable, or obviously beaten in a hand of poker. It's basically moving "All-in" with a strong dickhead factor.
"I saw Bob make such a lol-in with 7h2h on a board of AsKs4s10sJc 6 handed yesterday. What a fucking donkey!"

"Hah! Really!? Could he even SEE the board!?"
by Conor_B November 11, 2007
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It simply means, "Laughing Out Loud." Typically said through social media, or texting (which is pretty much the same thing). It's usually said when someone says something weird, yet funny, or just funny itself. 'c' Thank u peeps. c:
Example (weird, yet funny):

Person 1: U smell juss liek pooh. 'w'

Person 2: O_o wut dafuq?

Person 3: Lol
by fhk x3 April 1, 2016
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Used in texting lol meaning laugh out load usually used when someone says something funny
Knock knock Who's there Orange. Orange who. Orange you glad I didn't say banana lol
by Mel Mel December 24, 2015
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~~~lol~~~ it looks like a man drowning :L

Immature but get over it yeah?
ME: Hey :)
YOU: Hey:}
ME: Wanna see this really amazing thing?
YOU: okay...
ME: ~~~lol~~~
YOU: ....
ME: its a man drowning!
YOU: how old are you, 3?
by GeordieGirl23 May 8, 2011
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Person 1: My mother just died yesterday

Person 2: Sorry to hear that, lol
by InternetIgnorance February 3, 2017
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The term used that is slightly nicer than saying, "Now that just wasn't funny." Not to be confused with 'lol' alone, without a period.
Over text:
"What kind of key opens a banana?"
"I don't know, what?"
"A Mon-key!"
"Lol."
by colsbby May 4, 2009
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A term commonly used on the internet when you're not really paying attention, or have nothing to say.
Person: Man, my grandma died today. I'm totally bummed.
Me: lol


Person: Today was boring.
*10 minutes later*
Me: Lol.
by Redux August 21, 2005
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