I've had a tough time with Pynchon. I liked him very much when I first read him. I liked him less with each book. He got denser and more complex in a way that didn't really pay off.
What is fetus farming? Simply put, it is the creation and development of a human fetus for the purposes of later killing it for research or for harvesting its organs.
All across Africa, the Pacific and the Americas, we find cultures that didn't know about mouth kissing until their first contact with European explorers. And the attraction was not always immediately apparent. Most considered the act of exchanging saliva revolting.