A veterinarian in rural Maine has a city dog brought to him after an encounter with a porcupine.
After an hour of prying, pulling, cutting and stitching, he
returns the dog to its owner, who asks what she owes
"Fifty dollars, Ma'am."
"Why that's simply outrageous!" she yells. "That's what's wrong with you Maine people, you're always trying to over charge summer visitors. Whatever do you do in the winter, when we're not being gypped here?"
"Raise porcupines, Ma'am."