Once upon a time there was a little girl called Sophie. She never wanted to do the things her mum had asked her to. She refused to get dressed in the morning, spilled her cocoa on the table. She didn't want to come home from the playground nor have her lunch.  But then, all of a sudden she heard a giggle. As she turned around she spotted an ugly little brownie sitting on top of the wardrobe. The brownie was watching Sophie contently.
He said he was Tantrum Brownie, friend of all children who have tantrums. But Sophie didn't want such a friend.
"Leave me alone" she said, but Tantrum Brownie stayed. He followed her everywhere and giggled happily whenever Sophie did something he liked.

Can Sophie get rid of Tantrum Brownie? Of course. There is a very good trick to make him upset.