For breakfast I always eat cereal in a drinking cup. The thought of using a bowl for cereal never crosses my mind. And whenever I feel thirsty I fill a small bowl with water (or whatever softdrink) and drink it. The thought of using a cup to drink never crossed my mind until my friend pointed that out. Am I normal?

The truth is that he's too lazy to wash his bowls.
Not normal, but not really a problem either.
Sounds strange to me though.
Nothings wrong about that, if that's what you do then that's what you do! Don't let ANYONE tell you otherwise!