ðɪs ɪz ɐ ɹˈɛfɹəns tə ðə klˈæsɪk sˈɪɹiz, wˌɛn ðə dˈɑːktɚ wʊd sˈʌmtaɪmz kˈɔːl hɪmsˈɛlf dʒˈɑːn smˈɪθ ɐ vˈɛɹi kˈɑːmən bɹˈɪɾɪʃ nˈeɪm.
This is a reference to the classic series, when The Doctor would sometimes call himself John Smith (a very common British name).