He hadn't been saying any of these with intent until last Friday.
Cal started crawling all over the house and saying "Mama. Mama. Mama". He knows where my office is and would crawl into my office saying the above.
I got video proof. And here it is:
He has done this several times since too so I know it's not a fluke. If I am in the kitchen, he will crawl in and say "Mama. Mama. Mama". It's funny that he crawls all over the house asking for me.
Such a cutie!