tommy what are grinders?

i have heard you talk about them but what are they

Grinder = Hoagie = Sub.
Just depends where you live!

have not heard the “grinder” since i was a kid lol

In our neck of the woods, a hoagie is a hoagie, and a grinder is a hoagie with extra cheese on top, baked in the oven.

Grinder
The term “Grinder” can be traced back to the East Coast, where, during WWII, Italian immigrants setup sandwich shops close to the shipyards. These super-sized sandwiches were a favorite of the hard workingmen who ground rivets off the warships. The friendly shop owners referred to the men as grinders and the ever-popular sandwiches also came to be known as Grinders.

http://www.pmq.com/mag/2003september_october/subs.shtml

There you Fat Boy, I couldn’t have explained it better myself.