A Growing Personality - Humor?

The news was on while I was waiting for the Y&R and the Ambien commercial came on where they are using a rooster right now. Kensley looooooves chickens and roosters. She got excited and surprised and told me there was a "woo-tah" on TV. I confirmed her announcement and kept cleaning up her lunch plate. I noticed her saying "tiddy" and a bounce out of the corner of my eye. I looked over and saw her bouncing up and down with her hands over her mouth saying "tiddy," bounce, bounce, "tiddy," bounce, bounce. She was play-giggling (hands over her mouth and bouncing) telling me that the rooster on TV was SILLY! A little sense of humor is clearly emerging.