We're dropping my father-in-law at the airport. He's getting his bag from the trunk when he sees a folded paper on the ground. Did he drop it? Could it be his tickets?
He picks up the paper and unfolds it. It's just some discarded pamphlet. He drops it back to the pavement.
Dad doesn't think of this as littering because the pamphlet had already been dropped by someone else. It was pre-littered. So Dad thinks it's perfectly alright to drop the paper - as if he had never picked it up.
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