Top Definition
You're gently falling asleep after a long, hard day of tiring work. You're feeling very peaceful, with a big fluffy comforter and your head pressed snugly into your pillow. You can feel everything fading away whOHMYGODWHATTHEFJUCKGNINGA! Oh, DAMN! Oh, damn! Oh, man, that was scary.

You're sitting up in the pitch black, panting and covered in sweat. What the hell was that?! You hope that that will never happen again.

But it will, trust me. It will happen again. And again. And again.
A hypnic jerk is a good way to finish your day with your heart speeding at 160 bpm.
by Sleazy Z-Bro May 11, 2013

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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The "What are you retard's" That you get before you fall asleep
I gots the big jolts, before i fell asleep
by krys November 07, 2004

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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