Top Definition
Microsoft Transmitted Disease. Unfriendly code which propagates due to Microsoft's insistence on distributing operating systems and applications that resemble Petri dishes. It can be a virus, worm, trojan horse, whatever you want to call it.
Using Internet Explorer it's the best way to get a MSTD.
by 'Aztec Eagle' Turbo May 24, 2005

The Urban Dictionary Mug

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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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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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