We were at my father's birthday party and my 3 year old niece Emily was sitting next to him while he was opening his gifts.  My father opened a card that had a beautiful young woman on the front and he whispered to Emily "this is my girlfriend, but shhh.. don't tell grandma".  Emily looked at my mother with wide eyes, and clamped her mouth shut.  My mother asked "Emily, what is it?  Is something wrong?".  She looked back at my father and he whispered to her "It is a secret, you can't tell grandma".  She looked at my mother again with these huge eyes and my mother once again asked "Emily is something wrong?  Do you want to tell me something?"

Emily got out of her chair, threw her arms around my father's neck and said very quietly and a little upset "I am so sorry grandpa, I have to tell grandma on you"