Top Definition
iyb
in your butt
my husband keeps leaving my notes that end with iyb after his name
by gloucesterdave1 December 01, 2011

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iyb
improve your brain; used when someone says something stupid
Agata: "I saw this in a dream"
Liam: "Your Psychotic?"
Janik: "you mean Psychic..iyb..."
by keeroonf April 08, 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.

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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).

Buy the t-shirt