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1.
Laugh out super loud

Soompi IRCers created this LOSL
me: i fell into a pothole
you: LOSL
me: -_-
by soompi irc September 09, 2007
 
2.
laughing over several lols
when you losl, you laugh at lots of things that have made you laugh out loud
by tam_05 September 15, 2011