He knocks, and the door opens.  It's not a witch, after all, but an old man with a face like sour milk.  He tells Jim… i'll feed you, but then you have to fuck me.

So Jim sits down and eats his fill... when the old man strips and bends over, Jim grabs something from the table and proceeds to ram it into the old man's ass.  After a while, Jim opens the window and throws out that item.

He proceeds to leave the cabin, and starts to tell John, "Hey, you know what?  I had a lot of food to eat - "

John interrupts him and says, "You'll never believe what i ate!  Corn on the cob!"