You have forever loved your grandfather for reasons more than one. His smile, his caring and enduring ways have forever enchanted you. Its time you let your grandfather know that he just means the world to you. You are really happy about having him as a grandfather. Send him warm birthday wishes and let him know that he is indeed the best grandpa in the world

You are the best grandpa in the world
And it gives me immense pleasure,
to see you smiling always
Thanks grandpa for making life this