C: (Playing with tape measure) Mommy, I measure 27 inches.*
M: (Busy hanging laundry) Getting big.
C: Mommy, you should say, "YOU ARE getting big."
M: Okay, you are getting big.
C: (could he sound any more condescending?) There you go.
My son, the grammar police.
*And yes, he is considerably taller than 27 inches.