I admit, my Grandmother can be a little annoying at times. She lives with us BTW.
When she talks on the phone, she puts speaker-phone on, with a hearing aide in, and she still can't hear well. Then she starts yelling into the phone. You can almost always hear her from any part of the house. And when she listens to music, she turns the volume up as high as it can go, and still has her hearing aide in. She asks if it's too loud, and I say "no, it's fine Gram". But I wouldn't even think of telling this stuff to her face. I know that she can't hear well, I don't really mind. If she would die, I'd be devastated. She is one cool lady. Especially when she gets drunk (which is like every other day).
My step-grandma on the other hand, is a 63 year old bitch. No seriously, she's a total bitch. She'll talk about you behind your back, deny you food, she won't bring anything to parties, yet tells everyone else to bring lots of food, and she is just generally mean. Her I wouldn't mind dying.
