A girl was given a tea set for her second birthday. It became one of her favorite toys, and when her mother went away for a few weeks to care for her sick aunt, the toddler loved to take her father a little cup of tea, which was just water really, while he was engrossed watching the news on TV. He sipped each "cup of tea" he was brought and lavished generous praise on the taste, leaving the little girl immensely proud.
Eventually the mother returned home and the father couldn't wait to show her how his little princess had been looking after him. On cue, the girl took him his "cup of tea" and he sipped it before praising it to the heavens.
The mother watched him drink it and said: "Did it ever occur to you that the only place she can reach to get water is the toilet?"