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Someone who is stupid and retarded in ways that con not be imagined by mankind.
did you see that longon walk by?
by Albert Leskoviku June 07, 2005
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Someone who hugs, touches or stays on one subject of a conversation umcomfortably long. Usually unaware they are doing so.
"Man, Josh hugged me forever, he was such a long-on!"

"Ew, a guy at McDonalds was a long-on, he held his hand around mine when I got my drink for maybe ten seconds."

"Amy talked about shoes forever, I didn't know she was a long-on!"
by Katesies_Pirate July 23, 2007
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