After making my eyes bleed by watching the first boxed DVD set of Family Guy entirely too fast, I have been utterly fascinated by what Stewie knows and doesn’t know that would be a bit quirky at his age (despite the ability to talk). I’ve made a preliminary list off the top of my head, anyone want to keep adding on to it?
Knows:
Orgasm (or at least how to fake it)
Time machine creation
Operating a death ray
Infatuation
Familiar with Benetton commercial
He also knows about the ending scene from the Hulk tv show (David Banner walking along hitching cars with his jacket over his shoulder while sad piano music plays).
In fact he does a great impression of it, considering the show was, what, twenty years older than him.
He knows “Rocket Man,” and how to do pretty good stand-up.
He doesn’t know that Santa Claus isn’t real (although that’s a matter of debate in the Family Guy world - we don’t necessarily know it was Santa who gave Stewie the plutonium), nor that most people aren’t as conniving as him (especially Lois).