ɪɾ ɪz ɐ kəŋkˌætənˈeɪʃən ʌvðə wˈɜːdz "hˌuː æm ˈaɪ?" ænd pɹˈɪnts ðɪ ɪfˈɛktɪv jˈuːzɚnˌeɪm ʌvðə kˈɜːɹənt jˈuːzɚ wɛn ɪnvˈoʊkt.
It is a concatenation of the words "Who am I?" and prints the effective username of the current user when invoked.