Somewhat a reversal of pool #2140, when characters from the same family (canon or family created through fandom) show a distaste towards their family or a family member. A de facto or de jure step family may also count.
Pets may count as well since they are part of the family. Same rules apply for them as well.
For instance, a father seeing his daughter in full bondage gear and wondering where he went wrong with raising her.
Really, if the image implies the character is thinking "How are we related?" or "I wish I was part of someone else's family", then chances are it should belong in this pool.