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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Top Definition
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

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt