When I went to a Durham College, back in the late 60s, I soon made friends. In our group we discussed sex, politics, sex, philosophy and sometimes sex. Another group coalesced on the topic of football. They talked about it whenever they were together, teams, individuals, best goals any aspect of the game was covered over and over again.
This went on for the first two terms, and we at first became bored and later bemused, then amused by their single minded conversations. As we went home for the Easter break we wondered if their conversation would change to cricket for the next term. To our amazement they continued to talk about football. his went on for the whole of our three years. Now I follow F1 motor racing, another of our old group is into steam railways, third into old LP records and when we get together we talk about those topics, and sex and our lives.
I have never understood, their single minded, single topic three year conversation. Maybe someone can explain?