were did stewie get his smartnest from if his dad is an idiot and even his mom cant biuld a time machine?

Well, Stewie is not really Lois's and Peter's offspring. He's actually an alien and he implanted himself in Lois's womb. Why tu ask? So, he can destroy all the retards and take over.

XD That's not really why he's a genius. I actually don't know why. But my explanation seems awesome though.

i dont make he was "BORN THAT WAY"