Uh-oh

C somehow started using the phrase "uh-oh". She typically uses it whenever she falls down or whenever she drops something by mistake. Since, this was in line with the general use of "uh-oh" we were quite excited and we started using it on her, whenever she fell down and was about to cry. She thought uh-oh was a fun word, and should not cry whenever it was uttered and would control her pain / tears. Or so we thought.
She also has this habit of chucking things down the stairs whenever she got a chance. Daph feels that this is C's way of calling my attention when I work downstairs on the comp. I feel C is doing it just for the fun or the sound the objects make when they fall / roll down the steps.
Today she was playing with daph's nail polish bottles and was getting ready to throw it down the stairs. We both said no. C prefers not to understand the word NO sometimes and proceeded to throw the first bottle. It rolled down all the way. While we both were shouting, "no", she chucked the second one. And then said "Uh-oh"!