The movie which the girl and the baby are watching just before Grant visits them is "The Toxic Avenger" a popular Troma Release.

Right after the huge out break of worms the mother tells the two girls to go to bed. Well look at the books the two girls are reading.The books "The Girl Who Cried Monster" and "You Can't Scare Me" from the Goosebump's series. This is trivia because one of the books talks about a man doing weird things with slug like creatures.