Children and BBQs

We were pitched opposite a family last week, who had a bbq on Saturday evening.  After eating they went into the caravan, shut the door, tv on (watching eurovision?) except the son who was about 7 years old.  He then `played` with the bbq, poking a stick into it and fetching charcoal out with the stick.  Didnt the parents not wonder what he was doing outside alone when there was a bbq, it doesnt bear thinking what could have happened.  Another case of `out of sight`.