Something along those lines might work. Not so much “adamantly” but yeah they’re often repetitive, just part of who they are. The grandpas at least aren’t meaning to come across as they are, which is why I haven’t gone the direct confrontation route, from other experience that doesn’t go well but well worded “snark” or sarcasm oddly enough seems to work. These are old brown men who have improved a lot over the years. Knowing how to confront them in a way that leads to a desired effect is a skill.

Idk maybe I’m not treating this with appropriate concern, my childhood was filled with older women telling me I’d be a lady killer when I grew up, pinching my cheeks, and asking to steal my eyelashes…