(slang) (adj) Greedy is a slang term used primarily by girls to describe rivals to their potential mates. It is most commonly used as a mild racial slur, but can extend into other meanings as well.
For example, a black woman would label a white woman who dates primarily black men as greedy. Basically implying that the white girl is not satisfied with the over-abundance of potential white suitors at her disposal, and has begun dating black men when she really has no reason to.
Again, a straight woman might label a lesbian or bisexual woman as greedy, if she catches said woman dating a man she finds attractive.
This term might also be applied to a gay man, if his current boyfriend is bisexual, and extremely attractive Though this usage is rare.
(n) Greedy is also a sexual orientation. (see bisexual)
(adj)Somebody who is rarely satisfied with what they already have.
Latina1: What is Mary doing all over Hector?
Latina2: That slut is so greedy. Why can't she leave our men alone?
Girl1: Isn't Stacie a dyke? Why is she going to prom with Derek? What is her problem?
Girl2: She is just plain greedy, that's what her problem is.
Woman: Raoul, Why can't you leave Andrew alone and find yourself a real homo? Stop being so greedy!!
Girl: So, are you gay or straight?
Guy: Neither, I'm greedy.
Boy: Porky is so greedy. He ate half of that pizza all by himself. I didn't even get a single slice.