in a kidding, nice way?
I was at the store and a girl was walking with her little boy, who was probably 18 months? He bounced a bouncy ball on the ground and started dying laughing and the mom smiled at him and said "hey butt that hit mommy" and he laughed some more. She wasn't mad or being mean about it. Then she said "come on bennybutt lets get in line" and the girl that was checking out ahead of me, looked at me and rolled her eyes and said she would never refer to her child as an ass.
Do you really think calling your kid a butt is innapropriate? I think butt is more appropriate then calling your kid a bratt.