This is kind of a pointless poll other than to satisfy my curiosity, but which spelling do you use and why? I'm kind of wondering if the "momma" spelling is more of a southern thing.
February Siggy Challenge: Favorite TV couple ~ Jim & Pam 
Edolie Mae ~ April 21, 2014 
Re: Mama vs. Momma
Annnnd hilarious that you were called girl girl, how cute!
That said, I am "mommy" to kiddo. Mama seems like a babyish term and I really only call myself by that name during the early infant months and/or when kiddo is sick or hurt (i.e. "Awww, come to mama, I'm sorry you're hurt!")
Never heard anyone using momma before but I live in New England.
I had no idea there was so much variation in this. Kind of fascinating.