Blue Mage 

a type of hybrid character used in Final Fantasy games in which a charater is able to use the special skills/magics of an enemy. Also known as Enemy Skills in the 7th installment of Final Fantasy. Spells like White Wind and Mighty Guard are typical Blue Mage skills.

That Blue Mage should have used Mighty Guard before the boss used that 5,000 damage move; we probably would have lived.

Blue Mage by TenguNigga October 11, 2004

Blue Maged it up 

In the TCG Magic the Gathering, Blue magic is considered the sneaky and subtle type of magic. Using only ones intelligence and wit as weapons, Blue mages are considered to be (to outsiders) Big headed, egotistical, fuckwits, whose only desire is to make everyone else life as infuriating as humanly possible. To 'Blue mage something up' is to take a very normal situation, and apply FAR too much thought and planning into it, until only you can possible understand what is going on, or better still, everyone else is aware f what is going on, but is powerless to stop it. This can often mean you are the most hated person in your present company, all the while knowing quite comfortablebly that you are in complete control.

Person 1: I've had enough of this crap, I'm leaving
Blue Mage: No, you're not
Person 1: Yes I am
Blue Mage: No, you are not. Whilst I regocnise your anger, and I must say it amuses me slightly, you are however, in a particularly vunerable position. You are unarmed. You are lost. You have no-one to ask for directions. You are not even sure where you are supposed to be going. While you may THINK that leaving is the best plan, I can assure you that it is possibly the worst plan concieved since Joss Whedon said "Hey Guys, I have a GREAT idea for Angel season 5!"
Person 1: I hate you blue mage
Blue Mage: Whatever for? I was merely stating the blindingly obvious.
Person 1: ITS A FRICKING GAME OF DOOM!!!!

In this situation, Blue mage CLEARLY Blue Maged it up, but was he really in the wrong?

Another example:

Person 1: A door. Come on Blue mage, we need to get through here.
Blue mage: Aha! A door bars our path! Not to be detered however, I know the correct summoning spell required to the Goddess of the True Path, removing this obstcle from our way! Stand back friend, for I shall begin the incantation.
Person 1: Or we could just open it?
Blue mage: NAY! How can you be sure it is safe? Who knows what manner of traps and surprises lay beyond. No. I shall summon the Goddess, then she shall guide us true!
*Summons the Goddess of the True Path. The Goddess brings her full divinity to wrath, smiting the door where it stands. The Door, now a mere FRAGMENT of what it once was, lies shattered and smoldering.*
Person 1: Blue mage, this is my house, I KNOW what was behind it! I have a KEY!
Blue mage: But I did not know what was behind it. So I assumed that the door was an ill-concieved attempt on my life, and took the appropriate action under the circumstances. Its quite clear to see. Fool!
Person 1: I hate you.

Blue Maged it up by Blue Mage Anerios , The Oakbot 5000 and Lawman September 4, 2008

BlueMage 

A common job class within the Final Fantasy series. The "BlueMage" learns his skills and abilities from opposing monsters. In Final Fantasy 7, the blue mage was replaced by the "E.Skill" materia. E-Skill stands for Enemy Skill.

-What's your favorite job class?
-I like the blue mages.

BlueMage by Ace March 12, 2004

BlueMage 

An infamous internet personality, known for his delusions of grandeur and ability to splice his urine stream into three seperate streams.

BlueMage by BlueMage August 28, 2003