Of which of course innuendo relies on social expectations. And so when you see a lumpy rocken form as a huge cock you are in part seeing its cultural conditioning that makes it so. The dirty mind sees the content of a culture that is present but subsurface. Some of the early "venuses" were barely human let alone women, yet we see the maternal. The lengths to which stretch it, how deep it runs. Man two spheres a tube, woman a bucket and curves.
See too: Lisa Yuskavage at Contemporary Art Museum St. Louis