beef curtains
hairy lasso
growler
vertical smile
box (interesting variation, loose box-which is also a stabling type for horses, giving loose box an interesting ring to it)
gash
axe wound
groove
creamy crease
Am assuming that vaginal slang doesn't explicitly mean vagina, making the assumption that includes vulva.or the entire pudenda.
Some of the more crass terms above, such as growler, axe wound, etc are common vulgar aussie slang. Probably one of the reasons aussie women prefer gents from overseas.