Someone who can be nice as pie one minute & a backstabbing bitch the next.

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.

1. a girl who displays both qualities of an amiable friend and a cold-hearted bitch while interchangeably switching between both moods.

a two faced bitch is a female who yew think is your friend and yew tell her everything then her hoe ass goes around and tells everyone all yo cool-aid

One minute they are your friends, but then decide to follow the crowd and try to bring you down.

Definition: someone who is way too dramatic and cold hearted and does not care who they hurt and tells you one thing but does another. Bitch
example: Aryanna is a two faced lying person and is cold hearted and does not take other peoples well being into consideration.