Corrected entry: At Chris's wedding, just before the camera pans to Stewie appearing in the aisle, Francis Griffin can be seen in one of the pews. Francis, however died in the episode 'Peter's Two Dads'.
Corrected entry: Both young and old Stewie don't seem to know how human reproduction works. Yet in the episode where Peter and Lois decided to have another baby Stewie understood the biology well enough to shrink a ship and fly into Peter to destroy his sperm, implying detailed knowledge of the system.
Corrected entry: When Tom Tucker sits down at his "private booth" (a bathroom stall), the man who enters the stall never lifts up the seat on the toilet before sitting down, hence he sits on Tucker's food.