Ottomas family

What's wrong with the Ottomas twins?
There is a known bug in the game that gives the twins a random father (and in some cases, a second biological mother) instead of listing Peter as the father. Their father is always a random Sim. It could be a Townie, an NPC (e.g. the Repo-man or Grim Reaper), a child, a woman, or even a pet. This is addressed in the Seasons patch, but the patch will only fix instances of the family that are in the Family Bin. In neighborhoods where they have been housed before the patch was applied, the bug will not be fixed.

Because of this bug, many players choose to delete the Ottomas family and make their own version. Another solution is editing the family tree with the InSimenator or with SimPE. Yet another is to use the InSimenator or the Sim Blender to terminate the pregnancy.

Reportedly, the twins themselves are bugged, and a very bad thing for a neighborhood; possibly leading to serious damage to both the neighborhood and the game.