I love this story (reported here) told by a Roman Catholic priest, Fr William Stetson, about the time he met the-then Cardinal Ratzinger. The following conversation ensued.
“Are you a convert?”
“No, Cardinal, I’ve been a Catholic all my life.”
“Most interesting, Father. I became a Catholic when I was baptized.”
A Lutheran (or other Augsburg evangelical) would say “Christian” rather than large-C “Catholic”, of course, but apart from that Ratzinger has hit the nail on the head.