Top Definition
Something that looks so wrong or awful it can cause nightmares or cause you to think you're having a nightmare.
1) Oh. Em. Gee. That is like suuuuch a sightmare of a dress.
2) Hey, that guy over there...? What a sightmare.
3) The puke in that room is such a sightmare. I felt sick when I saw it.
by Nicitzachael November 06, 2010

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

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The Urban Dictionary T-Shirt

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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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Something so terrible, one would only expect to see it in the most terrible of nightmares, yet there it is, in real life, right before your eyes.
Dude, I had a nightmare that I saw x-men origins: wolverine, and it was just terrible.
No dude, I was with you, we saw it yesterday, and safe to say, it was a sightmare to say the least.
by Nerdock January 28, 2011

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