A pair of heterosexual girls who are really close friends. They are inseparable and may have serious future plans that include each other, such as rooming together in college/living together, and/or owning a bunch of cats together. The living situation is very similar to a Boston Marriage minus the lesbian aspect.
Bestbians are the female equivalent of a bromance.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.