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1.
"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 10, 2007
 
2.
"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 10, 2007
 
3.
getting a second degree burn by dropping cheese on your thigh while you were melting it.
ouch! what a lolin! that really hurt!
by heather October 05, 2004