@godfreygirl143,
In previous generations, most Grandparents were seen as formidable, and certainly not to be trifled with.
My maternal Grandma (nan) worked in a cotton mill as a girl, and had muscles on her arms like a docker.
I would guestimate that she gave me a good doughboy (clip round the ear) at least twenty or so times over the course of my childhood, and I quickly learned what was, and what was not acceptable behaviour.
I don't think any less of her because of her disciplining me, in actual fact I look back on that with great fondness, and my siblings and I often laugh at what our grandparents used to do in order to keep discipline.
Don't get me wrong, there were many, many laughs as well...
Don't stand for any nonsense and speak straight. They'll appreciate you for it one day.....