Be careful what you(r kids) wish for

Haha! I'm amused at my clever title! And the parentheses in the middle of a word! Priceless!!
Whew, OK, I feel better now. On with my story...
Today when we went to pick Nina up at school, Maggie stopped amidst a field of dandelions. "Ohh!" she said, "I'm going to make a wish!"

We got Nina, came back down, and the two of them started blowing on them and wishing. Cute, right? Wrong! Do you know what they were wishing for? A PUPPY!
I told them, "No! New family rule: no wishing for puppies!" and Maggie smiled at me, blew on a dandelion, and said, "I wish for a pony!"
"I take it back!" I told her. "Wish for a puppy!"
Kids: 1, Me: 0. What's new?