It uses part of a traditional Moroccan children's song and game, "A Ram Sam Sam", made popular by the 1971 Rolf Harris recording.
ɪt jˈuːzᵻz pˈɑːɹt əvə tɹɐdˈɪʃənəl mɚɹˈɑːkən tʃˈɪldɹənz sˈɔŋ ænd ɡˈeɪm, "ɐ ɹˈæm sˈæm sˈæm", mˌeɪd pˈɑːpjʊlɚ baɪ ðə nˈaɪntiːnhˈʌndɹɪd sˈɛvənti wˈʌn ɹˈɑːlf hˈæɹɪs ɹᵻkˈoːɹdɪŋ.