Nicknames for grandfathers

My boss just found out his daughter is pregnant, so I want to harrass him by calling him various nicknames for grandfathers. Help!

Grandpa
Gramps
Pop-pop
Opa (which I guess I should have listed third?)

What are some others?

Papaw is a perennial favorite here in the mountains. Along with his wife Meemaw.

My grandfather was Pappy!

My dad is Grampy

Grandaddy

My dad is called Grandy. Other than that I have had Grandaddy and Gramps.

Names I have heard:
Big Pop
Peepaw (it goes so well with Meemaw)
Papa Bear
Paw-paw
Big Daddy

I was raised addressing my grandfather as Pa. Fairly dull, but I figure I should bring it up since no one else has mentioned it.

My dad is Boompa. It’s a direct steal from Jimmy Stewart in Mr. Hobbs Takes a Vacation.

I had Grampy and Grandpere (alright, so the latter is just French for grandfather, but it helped distinguish between them).

My grandfather is “Boo.” Being his first grandchild, I had the honor of coming up with it (if not just because I couldn’t pronounce “Grandpa” at 1.5 years old).

There’s some cute story behind it, but I’ll be damned if I can remember it.

My mother’s father was Grampa; my father’s father was Granddad.

Western Pa checking in here. I sure loved my Pappap (and of course Nana)

When the first neicephew arrived in our family, my mother specifically insisted on being “Meemaw” to differentiate between the various other grandmas and great-grandma’s. Our Dad is called Pawpaw, Poppi, and Pahpah by the various kids.

My grandfather was Grandpap. My dad is Pappap, to his grandkids.

OMYGOD. I had Grandmere and Grandpere. And we weren’t French (though Grandmere had us believing we were for some time).

My niece calls her grandfather Zadie.

I think polish is dradje.

This page gives Dviadek as the Polish term. I like the fact that Norwegian and Swedish have separate words for “maternal grandfather” and “paternal grandfather”, as do Chinese and Vietnamese.

Mine was Pepere.

I keep trying to convince my dad to be “Poopaw” to my new little girl, but he’s not buying it.