“First of all, in a store, don’t start opening up merchandise and sticking it in a bag. That makes all sorts of things go through clerks head, most of them saying you are a shoplifter”
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Nonsense! - Costco even sells the bags to put the stuff into; that’s what they are for.
He wasn't using one of those cloth bags.
Not that is something to get shot over, but opening unpurchased merchandise will not make friends with the store management.