An edit is when one composes a video filled with scenes and or pictures, using transitions and effects.

1. Blue Monday is the most depressing day of the year, calculated by Dr. Cliff Arnall, a researcher at the University of Cardiff's Center for Lifelong Learning.
Factors used to calculate the date included weather conditions, debt level, time since Christmas, time since failing our New Year's resolutions, low motivation and feeling the need to take action.

In 2005 the date was calculated as January 24th, in 2006 it was January 23rd, and in 2007 it was January 22nd.

2. A song by the hard rock band Orgy from their album Candy Ass.

When you post something on an internet forum or message board with the intent of changing it after a few replies have already been posted. It's usually changed to something that implies homosexuality among the now self-incriminating replies.

If you disagree strongly with something, or wish to change some thing, say edit.

When you come back to a message board post and change something.

an action in the urban dictionary which makes you able to change part of your definition.

Addition by subtraction.