Besides the obvious problem of racialised body proportion comparisons (and more so: genitalia focused ones introduced as ‘Chinese pee-pee’ and ‘African tribal DICK’) - the term itself also remains one reliant on reductive exoticism that’s highly othering. Finding humour in stereotypes doesn’t negate harm.

Want to highlight a specific geography? Use the region. Want to highlight a specific population or ethnic group? Use that. Want to talk about your scientific racism and at least sound believable? - at least just use ‘sub-Saharan Africa’ so not everyone spots that you’re a nut instantly.