YOU SAID:

My grandpa has a shiny and bald head

INTO JAPANESE

私のおじいちゃんはツヤツヤでハゲ頭です。

BACK INTO ENGLISH

My grandfather is shiny and bald.

INTO JAPANESE

私の祖父は光沢があり、禿げている。

BACK INTO ENGLISH

My grandfather is shiny and bald.