It's based on the movie Un Chien Andalou, which Salvador Dali helped write.

I'll cite the lyrics (I hope that's sufficient for this type of question):

Got me a movie I want you to know Slicing up eyeballs I want you to know

In the movie/film a woman's eye is held open while a razor is brought close. Then it cuts to a cow's eye being sliced.

Girlie so groovy I want you to know Don't know about you But I am un chien andalusia

This is the clearest reference to the film. Un chien andalou means an Andalusian dog. Then the pre-chorus keeps saying "I am un chien andalusia."

I hope this answers your question.