I just love the advert (don't ask me what for) where the child has a tantrum in the Supermarket aisle lead down and banging on the floor, as they do.
The mother then proceeds to do exactly the same actions which jolts total surprise to the child; his tantrum stops immediately 'cause he now has to laugh at his mum.
Can work, ya' know .. children really don't like to throw a tantrum and wish to get out of the situation so if you can make them laugh during their drama this can bring them round. Another way is just to walk away non-plussed as if they don't belong to you, and once they realise not grabbing your attention, will soon calm down. Course have to listen to their screams from 3 aisles away, but worth it in the end.
