Its just a rock thats made out of plain rock You can make it a un plain rockbut adding some stuff on i,You can also make it any rock.
Kid: Im gonna make this Plain rock become a pet rock.
Plainrock124 fan: You mean Plainrock 124? Your gonna turn him into a pet rock? HAHAHAHHAHAHA
Kid: No? I mean this Plain rock not plainrock124.
Plainrock124 fan: o h.
Get a Plain rock mug for your dog.