Definitions by Ars gratia artis

black friday 

The day after Thanksgiving, traditionally the first day of the Christmas season and the busiest shopping day of the year. Called "Black Friday" because of the massive profits retailers rake in, recording them in black as opposed to red which denotes losses.

"I'm going shopping at 10 this morning"
"It's black friday, everything will already be gone!"

black friday by Ars gratia artis December 7, 2013