My mom used say this to us all the time when we were little. She would tuck us into bed and we would say, "Mom, I love you to the moon" and she would respond "Well, I love you to the moon and back!" I've been really missing her lately.
I can't stand voicemail. If you leave me a long message then you can't be angry if I don't call you back because I know I have already heard your complete conversation. Text me or hang up and I am smart enough to return the call.