When I saw it on video back in the 1980s, it was much more cringe-inducing.
I seem to recall the lump migrating from the woman's abdomen, causing one of her legs to swell until the skin on her inner thigh was torn open and the guy emerged. She was screaming in agony the whole time. Of course, my memory isn't always reliable.
At any rate, this movie is still plenty gross and disturbing.
Old_Zircon I always saw the box for this in the video store as a kid, but I never watched it until earlier this summer. It's pretty much a masterpiece.
HP Lovesauce This movie is full of strange and trippy scenes - though this is the one that everyone remembers.
Gah, biting through the umbilical cord is the blood red cherry on top.