Top Definition
A name for the theoretical extra day you worked when you've already worked seven shifts during the week.

Also, a name for a day on which you work two or more shifts during a week in which you'll be working more than seven shifts.

It's a combination of Thursday, which is often payday, making a Thursnack slightly more bearable, and knackered, because that's what you are at the end of the week.
Employee 1: What do you work this week?
Employee 2: Monday to Sunday, with a Thursnack on Saturday.
Employee 1: Man, we seriously need to hire some new staff.
by thetolerableone April 21, 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