What happened to the 'my'??

So my toddler just went running through the house yelling "Mom, Mom, I asked you a question!!"

Wait a minute!! What happened to "mommy"? When did I become just "mom" (granted with the two kids, bags under my eyes, and baby weight I'm definitely feeling more "mom-ish" and less sassy young "mommy-ish" but she's not supposed to notice that!!)

I can't be sure today was the first time - but I definitely noticed it!!