Maleficent often mutters "Mama". It's actually one of the cute things she did to adopt me. She was in the cage at the adoption center, stuck out her front paws, pulled my hand to the cage when I held it up at her, and then head butted the bars and said, "Mama", and then proceeded to lick my hand. I was hers 10 minutes later after I filled out some paperwork.
I'll try to catch it on video sometime. She says it almost every day, at least once.