I read one somewhere about the show Rugrats and how all the babies are actually dead and just portrayed as figments of Angelica's imagination. :(
Chucky died a long time ago along with this mother, that's why Chaz is a nervous wreck all the time.
Tommy was a stillborn, that's why Stu is constantly in the basement making toys for the son who never had a chance to live.
The DeVilles had an abortion, Angelica couldn't figure whether it would be a boy or a girl thus creating the twins
It kind of ruined my childhood a little bit. There was a theory for the show All Grown Up as well, but I always felt that show was kind of irrelevant so it didn't faze me as much.