70's box 

untrimmed and very bushy pubic hair, in the shape of a triangle

When I went down on her, I had a hard time because she had a 70's box.

70's box by forresthump April 17, 2009

70s style box 

a vag thats not trimmes, it grows out like a fro from the 70's, not key , not key at all

i went to eat that girl out, n her 70's style box almost took my eyes out

70s style box by tj April 20, 2005