Top Definition
Usually this involves taking a less expensive item (usually a car or a musical instrument) and adding lots of after market (custom) parts to make the item look or work better. Sometimes it can involve more expensive items. Many times this saying can replace retrofitting. Always involves making the item more expensive and better looking.
"I just picked up a brand new Honda Civic and I am going to Sup It Up with a twin turbo and a cold air intake!"

"I bought a Fender Stratocaster and I am going to Sup It Up with some $900 humbuckers!"
by Vulcano November 23, 2008

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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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 way of greeting. A different way of saying "sup".
Supitup, Nid.
by RIDIcul0us December 12, 2009

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