Ignoring someone

1. Old people deserve respect too. I don't understand the complexities of having a grandparent that won't stop talking bologna that doesn't make sense (but that's because i listen to what my grandfather says and he doesn't go spout any sort of crap). You could just tell him something, but that may be hard on your grandfather (sometimes old people like to talk to you because they want you to listen to what they have to say; perhaps your grandfather enjoys talking with you?) If anything have a conversation with him, maybe it'll be a challenge to him xD

2. You can't learn how to ignore things. If you haven't been doing so already, you basically can't do it. That may just be who you are. If you can't ignore him, try to avoid situations where you'd need to.