Top Definition
What happens to you when you start nodding off and then you jerk your head back suddenly. Happens a lot when staying on the computer too long. Very dangerous if driving.
If you didn't get enough sleep, and you're driving, please pull over at the first instance of naplash. If possible, get coffee or walk around, or take a proper nap.

I was trying to play SWG the other night, but one of the people in our group kept disconnectin, and I started sufferin naplash.
by Leif April 07, 2005

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The act of going to sleep for a very brief period of time then waking up suddenly, whipping your head to the upright position.
"I was having a lecture on the political system of Nicaragua, within seconds I was getting naplash"
by ajt May 18, 2005

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.

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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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The repercussions from the era during which you downloaded, carefree, gigabyte upon heaping gigabyte of free music from Napster.
1: Dude, I just got an email saying that Roy Orbison's wife is suing me for downloading "Pretty Woman" in 1999.
2: Bummer, that's bad naplash.
by William Segal May 18, 2005

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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