Mac: Precioussssss sugar.... It burnsss us!!!
When Mac is on his sugar rush and goes into withdrawal, he's doing an imitation of Gollum in the Lord of the Rings trilogy, right down to the quote he says in The Two Towers where he is held by a rope on his neck: "The rope. It burns us." Also, he says "We hates it, yes we does", which is another line right out of The Hobbit, the prelude to the Lord of the Rings trilogy.