An old man is sitting on the top of a hill with his grandson, looking out over the rolling fields.

Old Man: "You see all those fields lad? I ploughed all those fields myself, but they don't call me Fred the field plougher do they?"
Lad: "Nope....."
Old Man: "You see all those walls between the fields lad? I built all those walls with my bare hands, but they don't call me Fred the wall builder do they?"

"But just one sheep........"