I'm Big and Tall Already

When Lucas refused to eat his vegetables, we tell him 'Vegetables make you big and tall'. When he made a big fuss about going to bed, we tell him we 'You will grow big and tall when you sleep'. Yesterday, on the car ride home, he had his 20 mins power nap in the car. When we get home, I put him on his bed. After tossing around for an hour, he finally walked to me and said 'I am big and tall already'. This cheeky boy, instead of saying 'I do not want to sleep', which he knows well I will make him go back to his bed, said he is big and tall. Very soon, he will out-talk us.