I love to be sarcastic with my kids, but even more, I love to be literal and pretend I don't know what they mean.
My daughter text me from school yesterday and asked me to pick her up. I told her I would when she got home.
Or answer "can I" questions with . . . "I don't know, can you?"
And after they say "What if . . . " I like to say "well, then (and I repeat their story)".
Every chance you get, throw something literal at your kids. It frustrates them, amuses them, and makes them really think about what it is they actually wanted to say.