Questions about example sentences with, and the definition and usage of "Ruder"

A: I've never talked to a ruder person.
- I’ve never talked to anyone as rude as the person I am discussing with you. They are the rudest person I have ever met.

I've never talked to a rude person.
- I’ve never talked to anyone who has been rude (unlikely!).

A: Get out of the way
Get the F out the way
Get out of the Fing way

A: they are both correct, but it is better to use ruder

A: I think its "d" word but both of em is a very rude word so better not say any of them , cause its very not polite

A: "shit"
"bullocks"
"fuck"