Do not

When you run code, it tells you "Do NOT:" and the code

Do NOT: program

(literally nothing don't put anything)

Don't eat program

eat

Quine

Do NOT:
Do NOT:
Do NOT:
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Do NOT:
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Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
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Do NOT:
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Do NOT:
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Do NOT:
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Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
Do NOT:
... (this would go forever)