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.
-Katie ditched her boyfriend to help her bestbian paint her room.
The most amazing thing on the face of the earth. It is know to be extremely unique and very fun to hang out with. Not is it just beautiful and funny but it is so lovable and extremely intelligent. People with that name all share what has been mentioned above. Unfortunatly, only few of them exist on the planet now. So it is important to love them and care for them and never make them upset.
"Oh honey, I don't know what to get you for your 18th birthday" "But mom! Everyone wants a beschier, and so do i"