I think the “Adults only” warning coupled with the near nude chap holding his gun and with wood makes this one to savour reading on the bus or tube, or anywhere the general public can speculate on precisely what the content might be.
I have a copy of this book. (The Playboy press cover from SI’s thumbnails link). It’s basically Tarzan/Doc Savage slash fiction. The adults-only label is well-deserved, but the book manages to be exciting and hilarious with it. Make sure to read the Amazon.com reviews at http://www.amazon.com/Feast-Unknown-Philip-Jose-Farmer/dp/0872165868
Hah. If he weren’t holding his big gun, I’m sure his knuckles would be dragging across the ground. The artist really got carried away here doing the arms and, especially, hands. To make up for the hips, I suppose.
This is apparently one of the few covers for this book that doesn’t show both protagonists going at it. A feast like that wouldn’t be exactly unknown, though.
Unless this is a book about a steroid-infused Neanderthal, who suffers from hand elephantiasis and lower torso dwarfism, who somehow found a rifle and doesn’t know what to do with it, this cover is really hard to explain.
But I somehow doubt that the aforementioned plot might be accurate.