He had been helping with loading the dishwasher.
'The dishwasher's loaded now, I just don't know what button to press'
'Okay Joel, let me come and help you. Oh, we can't put it on yet because it's not full yet. We'll put it on when it's full.'
A few minutes later.....
'Mum, the dishwasher's ready to put on now, there was no dirty stuff left so I decided to fill it up with clean stuff!'