Xtapolapocetl is the giant Olmec head that was given to the Simpsons by Mr. Burns in the episode "Blood Feud". The head, which currently resides in the Simpson basement (although it has never been explained how it got down there, or even how it got into the house in the first place), was given to them as a thank-you gift for Bart's blood donation.

Pronounced "Ex-top-uh-lop-ih-kettle"

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