Top Definition
The new rage of truck accessories, originally bulls balls and now bigboys that look like human scrotum that is hung on the back of a truck. Usually to let people know the truck is masculine. Different colors add additional meanings.
"man, look at dem brass truck balls, don't mess with him."
by jrBman August 26, 2006

The Urban Dictionary Mug

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The Urban Dictionary Mug

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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

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

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