A two year old girl is at home one day being looked after by her dad while mum is out shopping. The little girl has been given a tea set for her birthday and while her dad sits and watches the news, she goes off and comes back with a cup of water for him to drink. Being a good dad he drinks it and says “mmmm, lovely tea”. Off she trots to get him another cup of tea.
Later mum gets home and dad says “watch this, it’s so cute” as she comes back with her little cup full of water for daddy to drink. Again he drinks it and says “mmmm, yummy” and she toddles off happily.
Mum says “has it occured to you that the only place she can reach to get water is the toilet?”.