Playing House

A three-year-old boy and a five-year-old girl are playing house. Hend in hand, they knocked at the door of a neighbour's home. The neighbour opened the door, smiled, and said, 'Yes, what may I do for you?'
The girl said, 'We're playing house. This is my husband, and I am his wife. Can we come in?'
'Why, of course. Do come in,' replied the woman. She was so enchanted by the act that she offered them lemonade and cookies.
'Thank you!' said the boy each accepted cookies and a tall glass of lemonade.
A few minutes later, the woman said, 'Would you like another glass?'
'No thank you,' said the girl. 'We have to go now. My husband wet his pants.'