1) A typical ending to a brainless teenage girls' photo album, such as "Summmer 0999" or " City with the bfffs 09". Because of this, it has now become a common phrase used to bash popular culture that constantly refers to the year 2009. It works best as a sassy ending to a statement, and should usually be used in tandem with a peace sign held uncomfortably close to the face.
Colin: "Hey, what are you doin today?"
Eddie:" Endless amounts of college stuff.....OH nine!!