Scene: the car, on the way home from school.
Offspring #1: (with some urgency and excitement) Mum, guess what?
Red Dirt Mummy: Ummmm.... what?
#1: I can't tell you!
RDM: What can't you tell me?
#1: I can't tell you a secret about something I made that I can't tell you about.
RDM: Did you make something for Mother's Day at school? So you can't tell me because it's a surprise?
#1: Yeah, it's a surprise for you, for Mother's Day, and I can't tell you because it's a secret. Um... did I tell you?
He cracks me up!