The guy behind me took a call from his teenage son. Decent privacy and respect on my part would cause me to stuff my fingers in my ears to prevent me from hearing the conversation.
I might even have done that if the conversation was boring, but it wasn’t. The son was consulting his dad about providing, for money, a lawn mowing service for a neighbour. His father mildly reminded him that concentrating on his schoolwork might be a worthwhile alternative priority, but didn’t push that. Instead, he did a neat cost/benefit tutorial.
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