1-French for the color red
2-Variation of the word Rogue, a common character class in online games, widely used by retarded 12 year olds or ignorant virgins.
Normal gamer: STFU you idiot, its a rogue not a rouge.
Rouge is actually both a shade of red, and a type of makeup, however if you could magically alter it to rouge on the class names, many people wouldn't be able to tell the difference.
Wogue is a much funner nickname, however rouge is not only more well known, but most people don't even know it's just a nickname, or even misspelling. Rouge is possibly the most boring misspelling of classes in World of Warcrack, and why almost everybody misspells it's name so much escapes me.
"Ew gross so and so is wearing way too much rouge". <- The makeup.
"My favorite colors rouge whats yours?". <- The color
As a nickname: "Rouge sap X, watervendor sheep the moon thingy, loladin off tank if I die, durid keep us healed, and I the rawrrior shall tank".