While I kinda understand what your saying. You haven't brought Dad into the game yet. ( as far as I know since I stopped playing). Tim and Tom are only "SONS" of Lisa. The only way they could be "SONS" of another female is if Dad has a 2nd family hidden and they have a unknown StepMom.I understand your point. I'll just point out that being a 'Favorite Son' isn't exclusive to just their mother. The game isn't called 'Their Mother's Favorite Son'. The player gets the choice for the different characters to decide, of Lisa's sons, who their favorite is.