Every parent looks forward to their child saying "ma-ma" or da-da" for the first time. Last week the kid was into whispering "da-da." It was cute. Now he's learned "ma-ma."
"Ma-ma" doesn't mean he wants his mother. It means he wants something. . . held, a toy, food, sleep, the remote. . . it also means he's sad, happy, angry (that's just a loud "MA!"). I know the first couple times my wife was ecstatic the first time our little pizza roll said "ma-ma," but, judging by the look on her face when I got home, if she hears it one more time I fear she may drown the kid in a sack.*
He's lucky he's cute.
*Note: my wife is a lovely person and would never actually drown our son in a sack.