The levity is the humour of the song, still sung as 'harmless fun'; the stereotyping and the xenophobia go hand in hand - to write such a character is ethnic stereoptyping. Perhaps we could stretch that to an enduring fascination with diverse Exotica, which has a long & noble tradition right back to Purcell's Indian Queen and beyond, but I think that would be over generous in the present instance, which is perhaps as much as I can say? I just find the song uncomfortable & offensive; I always have. George is at his best when he sticks to the smutty innuendo and knob-gags.