Top Definition
Roist is a universal verb. It can replace any word as long as the meaning of the sentence is still clear. ex. "roist me another beer", "let's roist up a couple of steaks".
"If you don't like my fire then don't come around. Cause I'm going to roist one down."
by Carnbarn Chad September 18, 2007

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refering to a female being ripe, moist or both
ahh shes looking roist, aran your mums roist, ohh its roisting in here!
by Theeman2k10 :) April 28, 2010

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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.

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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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Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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An old fashioned pumping in the sac!!
watchaa do last night mate??

Fuck all, roisted a wee slag!!
by scottmcdee July 26, 2009

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