Titled "The Serfsons", the chapter was filled with references to the HBO show, whose season seven finale aired on August 27, reported The Independent.
In one of the scenes, Marge's mother is shown to have turned into an White Walker and Homer can only afford the cure by forcing Lisa to use illegal magic.
When the King gets to know about this, he kidnaps Lisa, and Homer must spearhead an uprising to save her.
To this Homer says, "Trees can't talk silly". The reference could be a sly hint to the carved faces on the bark of the Weirwood trees of Westeros.
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In other sequence, Marge and Homer are seen admiring heads on stakes, out of which one of them belongs to their friendly neighbour named Ned Flanders - a wordplay on Ned Stark, Warden of the North who was beheaded in "GOT" season one.
In a surprise climax, actor Nikolaj Coster-Waldau voiced as Marge's twin brother in the episode - as an obvious nod to the incestuous relationship shared by his character, Jaime Lannister, with his fraternal twin Cersei (played by Lena Headey) in the series.
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