"Shall we wash Grandad's tea pot up?"

I found out today, that when Grandad is being grumpy, Cara asks my mum if they should wash his tea pot up. Apparently, he doesn't like his tea-pot being washed and so they do it when he's grumpy to almost get back at him. My mum said that if he is super grumpy, then they give it an extra hard scrub! I'm glad I don't drink tea!