I don't know what the trope would be to put it under, but while the children are indeed stupid to mess with an unknown liquid, the adults are just as culpable by allowing the liquid to be unidentifiable to begin with. Any non-food product should always be stored in an appropriate container, with its contents labelled and any important details (poison, etc.) prominently noted. Ideally, it should be the container the product was put into originally by the manufacturer, because they have already satisfied these criteria.
As the album of your life plays, may there not be any scratches.
I don't know what the trope would be to put it under, but while the children are indeed stupid to mess with an unknown liquid, the adults are just as culpable by allowing the liquid to be unidentifiable to begin with. Any non-food product should always be stored in an appropriate container, with its contents labelled and any important details (poison, etc.) prominently noted. Ideally, it should be the container the product was put into originally by the manufacturer, because they have already satisfied these criteria.
As the album of your life plays, may there not be any scratches.