Rezero bad scene?

Where he stood naked next to that pink girl. 1: Why doesn't Subaru hide behind the door 2: Why is the pink girl actually looking? 3: If Subaru doesn't realize that it's a girl he's standing naked in front of, why doesn't he go in and slam the door???

A friend of mine regularly bites his 5-year-old son's bare bottom. Is that normal?

A friend of mine recently told me that he bites his son's bare bottom as a nighttime ritual. They both enjoy it and laugh. I find this somehow repulsive and disturbing, is this still normal? PS: I don't have children, so I can't really judge it from that perspective.