To Funny

I don't think my Mother In Law will find this as funny but Edward keeps calling her Daddy's Grandma. I keep correcting him but he still keeps calling her that. He is so excited that she is coming for his 5th Birthday (I know can you believe that he is already going to be that old???). I just hope that by the time she gets here he has it down that she is Grandma to him but Mommy to Daddy.