Green’s Dictionary of Slang

1. the vagina; occas. pl.

1958		Southern & Hoffenberg Candy (1970) 153: When it was in the goodie he changed his tune quickly enough.
1980		E. Folb Runnin’ Down Some Lines 240: Goodies [...] vagina.

2. the female breast and/or nipple.

1979

‘Iceberg Slim’ Airtight Willie and Me 152: She [...] rubbed its spoiled cherry nipple against his cheek. Her voice shook, ‘Like now suck this goodie is how you start to be my sweetie’.