This is not a common form of communication in most relationships. Usually, communication in a relationship is based on mutual respect, understanding, and sharing of emotions, thoughts, and experiences. But if in your relationship, you and your wife have a very open - minded and comfortable understanding, and it doesn't go against any ethical or moral values, then it could be a unique aspect of your relationship. However, it's important to ensure that it stays within the boundaries of what is acceptable to both of you.
Well, while every relationship has its own unique ways of sharing and showing affection, this might not be considered a typical form of communication for most. However, if both partners are comfortable with it and it doesn't violate any boundaries or values, then it could be seen as part of their special dynamic.
It depends on the couple. In some relationships, partners might have very open and unusual ways of expressing love. But generally, more common forms of communication like talking about feelings, sharing daily experiences are more widespread. This kind of'surprise' might be a bit out of the ordinary, but if it makes both of you happy and doesn't harm anyone, it could be okay.