Top Definition
a) a sign or signal designed to instill caution in its recipient

b) an amazing album by the oh-so-talented band green day. second only to their most recent album, american idiot.
a) warning: smoking during pregnancy may result in birth defects

b) i don't understand why the "emotional depth" and "pure talent" displayed in american idiot surprised everyone so much, because warning, their previous album, rocked and was definitely a sign of greater things to come.
by a TRUE green day fan November 25, 2004

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Photos & Videos
an awesome green day song that has a catchy beat; the premise of the song is simple- society is living in fear and worry, and not living their lives with any excitement
This is a public service announcement, This is only a test,
Emergency evacuation protest,
May impair your ability to operate machinery,
Cant quite tell just what it means to me,
Keep out of reach of children,
Don't you talk to strangers,
Get your philosophy from a bumper sticker,
Warning, live without warning
I said warning live, without warning
by GreenDayIsTheBest April 16, 2004

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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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A suggestion; not meant to be taken seriously.
A sign that says "WARNING: ice ahead." Means there is probably not ice ahead, and you shouldn't worry about it.
by Lania Blake June 27, 2010

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.

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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.

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