I've always been turned on by the though of casual humiliation scenarios..like this:

 You're in the middle of eating your morning breakfast cereal. I approach, smile and ask you your plans for the day; during this pleasant conversation I carefully take the spoon from your hand, unzip my fly, remove my wet cock and slowly wipe my cock head all over the front and back of the spoon, leaving it damp with pre-cum; return the spoon to you to continue eating your breakfast, say goodbye and leave the room...