Mapu?

Mami : Yiyi, how to call Yeh-Yeh? (Yeh Yeh: Cantonese for GrandPa)

Yiyi : Yeye.

Mami : How to call Mar-Mar? (Mar Mar: Cantonese for GrandMa)

Yiyi : Meme.

Mami : Yiyi, how to call Papi?

Yiyi : Paaaa.....phhh....Puuu...

Mami : He he he... how to call Mami?

Yiyi : Maa.......Puuu...

Mami : Hah?? Mapu??

Yiyi : *giggle giggle*

Yup, she still calls me Papu. And she calls Mami, Mapu. He he he...