2 definitions by A Team from the B-Teens

Niki refers to those specific females who are specifically admired by their teachers. Although this may refer to academic excellence, it ALWAYS pertains to a sexual attractiveness. In other words, teachers are always down with a Niki.

To clarify, the term "boyfriend" refers to a guy you are incredibly interested in; he doesn't have to be official or even realize that you call him this. He becomes a "gay boyfriend" if he's not down with you. (Because obviously, if he's not interested... he's clearly gay. )