a LOON is to "Laugh Out Of Nose". When people say LOL or to "Laugh Out Loud", most of the time they actually LOON. Think about next time you supposedly LOL, I bet you will actually LOON.
"loon!! i just saw some girl fall down the stairs"

simply respond to a funny text with "loon"
by Sergeant832 October 24, 2011
Top Definition
A Psychotic person. Short for lunatic.
Damn that guy was chewing on his finger because he thought it was a peice of chicken. What a fucking LOON!
by Delta9 March 01, 2005
In Aberdeen, Scotland, it's local dialect (doric) meaning a young guy. That's probably why there's another definition further up, for fans of the Scottish actor Billy Boyd. Whose not from Aberdeen I think but never mind.
"Aye, d'ye ken that loon fae two doors up?"
by loon July 02, 2004
noun
1 a large North American bird that eats fish
2 =LOONY
3 a rapper who belongs to Badboy Record
by obie September 11, 2003
Crazy mofo's. Psychotics. Loonies.
Damn i went to a party last night and saw some guy get his throat sliced by a couple of Loons.
by Delta9 March 01, 2005
Shortened version of the Canadian word 'loonie' which means a one Canadian dollar coin which has a loon (bird) on one side. It is equivalent to UK 'Quid'
I got ten loons in me pocket.
by Canadianhero September 03, 2012
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