It's a public holiday today. At 9am I said to DD4.5 'Oh no! You're going to be late for school!'. She looked worried and confused. I laughed and said I was joking, it was still a holiday. So she says sarcastically 'Oh no, Mum! You're going to be late for work!' and starts laughing at me (I have no job). Solid burn, kiddo. They say sarcasm is the lowest form of wit, but I thought it was a pretty smart comeback.