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And no sneaky knocking down Mr. Dent's house whilst he's away, alright?
— Douglas Adams · The Hitchhiker's Guide to the Galaxy
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker warns against knocking down Mr. Dent's house while he is away. The casual tone makes this very serious request sound like an ordinary reminder. The humor comes from having to spell out such an obvious condition.
Context reviewed