Top Definition
Squat and square in appearance, this unfriendly and ugly person is famous/hated for boasting, doing it at Tonbridge Castle and getting smashed every night.
Hangs out with Formans and Laphams.
Thesaurus:nm. Traitor, junkie, hobo and scrote.
A- My god! I'm gonna be sick- it's Nissen.

B- Is it a breeze block, is it a vending machine? NO, it's Nissen!
by avenger of the idiots February 12, 2005

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A Big or "Fat" person, who is usaually stupid, ugly, very rude, obnoxious, disgusting and weird.
Man that kid is such a Nissen, no wonder he can't keep a girlfriend.
by MyNameIs... December 13, 2007

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.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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

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A Physics teacher who doesnt teach at all. He gives you quizes on stuff we dont even go over. He Busts his head open on wooden cabinets and he also grades homework for accuracy when we dont know how to do it. Slit your hand open again nissen. again.
Nissen is a fagtron
by Deke November 25, 2003

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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