I wanted to say something else about Erica Jong's heroine's quest, in FoF, of the zipless sex act. Namely: it's imaginary and impossible. You read of people who say things like, "We started to kiss, fully clothed, and the next thing I knew we were having sex."
But I don't think it's ever entirely true
That that was the very next thing that they knew.
They're simply skipping the awkwardness
By which they achieved a state of undress.