Top Definition
A username, for the internets. The most rarest of all usernames, too. Only a handful of people use this name. And people whose name is "Nightmare-Box" is most likely a bisexual, teenage, cross-dressing, male weeaboo from North America with nothing to do. A "Nightmare-Box" will use CAPS LOCK when showing affection through the internets. They have a strong obsession for YouTube, 4Chan, and Anime Conventions. They hate MySpace and love cosplaying.
Allan: Are you going to Acen 2010?
Joey: No, you?
Allan: Well, duh. I'm gonna cosplay as Sasuke.
Joey: He's stupid.
Allan: YOU'RE STUPID, STUPID.
Joey: God, you're such a Nightmare-Box.
by Just Lexii April 14, 2010

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