не пропустите!

Black Friday - это день распродаж в пятницу после Дня Благодарения (всегда в четверг).

2013 date	November 29

Black Friday is the Friday following Thanksgiving Day in the United States, often regarded as the beginning of the Christmas shopping season. In recent years, most major retailers have opened extremely early and offered promotional sales to kick off the holiday shopping season.

Cyber-Monday - аналогичный день распродаж, только не в магазинах, а в online
пространстве - в понедельник после Дня Благодарния.

2013 date	December 2

Cyber Monday is a marketing term for the Monday after Thanksgiving in the United States. The term "Cyber Monday" was created by marketing companies to persuade people to shop online. 

Как говорится, - "Black Friday. Because only in America people trample each for sales exactly one day after being thankful for what they already have." :))))

to trample - топать, топтать.