Stems from the word vagina and the South African colloquial term 'china' meaning 'friend'.
A term used to describe
two very close females, usually bestfriends who if were
lesbian, would have the greatest relationship
ever.
Similar to manpanions and bumchums in the case of guy bestfriends.
Robyn is the
best friend that Kirstyn could ever have imagined and therefore is Kirstyn's vachina.
Kirstyn: Do you wana be my vachina forever?
Robyn: ah man I was about to ask you the same thing!
Paul:
Dude, are those chicks lesbians over there?
Tom: No ways man they're vachinas
Paul: oh yeah, yr right how could i have been so ignorant