Vague Differences

Riddle: What is the difference between a school boy studying and a farmer watching his cattle?

Answer: One is stocking his mind, while the other is minding his stock.

Source: https://www.riddles.com/226

What is the difference between a school boy studying and a farmer watching his cattle? — Vague Differences by Anonymous v1.

Riddle: What is the difference between a school boy studying and a farmer watching his cattle? Answer: One is stocking his mind, while the other is minding his stock. — by Anonymous v2.