I live in Eastern Europe and in my country we have a common practice of naming baby boys the same name as the father's father. While generally not an issue, I have entered a serious relationship and though we are not planing to have kids in the foreseeable future my father has started to apply a lot of pressure for us to have a kid and specifically naming the kid in his name, saying things like: oh "When are you planning for little Borat to be around?" or even directly asking "You are naming your potential kid Borat, right?" on numerous occasions. (Name changed for privacy and comedy reasons)
I don't mind the "When are you going to provide me with a grandchild?" part but my SO is not from the same country so she doesn't follow the same naming tradition and generally I don't think naming a kid (even a hypothetical one) should be a one person decision. I have discussed this with my SO, but since my opinion is that I don't want to honor the traditon her responce was something like "Ok, good" and it was not discussed further.
Up till now I have been deflecting by asking him to not put the cart before the horse and jokes like "Ah if it passes through 2 forms of contraception, we will call it Chuck Norris or Superman" but I feel I should address the issue sooner rather than later and preferably in a way that wouldn't turn into a huge fight. I expect my father to have an issue with that as he is more of a traditionalist, I am his only son, and he wouldn't want his name to "die off".
To sum it up, how can I explain to my father that I wouldn't want to name my future kid with his name without causing a conflict?