For example I like going in the Ocean. this may surprise some as it doesn't fit my uptight persona.
Your mum.
You see if I were asked about you, I would say that the most incongruous thing about you is your taste for bland ITV Sunday evening fodder like Morse and whatnot. But naturally you see nothing incongruous about at all. It's all about the gap between our understanding of ourselves and others' - usually faulty - perceptions and prejudices.
Mind you, I do find the tea thing odd.