Script (guión): Idioms, ‘about as useful as a chocolate teapot’. You would say this when referring to someone or something which is of no practical use. For example, young Billy wanted to help his mum out in his parent's shop. So he went in in the morning and had a few jobs to do but he was too young. He was getting in the way and he kept on wanting to eat all the food so the father called up at lunchtime and asked the mother, ‘How's he getting on?’
‘He's about as much use as a chocolate teapot’, said the mum.
‘Not so good then,’ said the father.