Funny niece

My little niece (just over a year old) is developing quite a personality and sense of humor.
Much of my family was there to witness it yesterday, and I wish I had a video of it, but maybe my sister in law can appreciate it anyway:

Uncle Brian handed niece a dollar bill from his pocket. She accepted, then handed it back.
As he reached for it, D yanked it back and said firmly, "NO!"
Then, she did the same thing again!

By this time, we were rolling with laughter, and my brother (baby D's dad) and parents saw what was going on.
D then yanked it away a couple more times seeing as how much we responded to her little joke.

"Good job, D!" was my brother's response.