Just a little while ago, I was in the kitchen, and Mackenzie was crawling around on the floor, and all of a sudden, I realized she was saying, "ma ma." Oh my gosh!!! Over and over and over again. I asked Anthony, "Do you hear what she's saying???" He said, "Yeah, 'mama'." No biggie. Of course, the minute I turned on the video camera, she stopped.
So then Darrell came downstairs, and I said, "Did you hear Mackenzie saying, "Mama?"" Cynically, I expected him not to believe me. His reply? "She's been saying it all morning - I thought you knew!"
Edited to add: Got it on video! :)