Green’s Dictionary of Slang

(orig. US prison) effeminate.

1902		‘Hugh McHugh’ It’s Up to You 11: I found one of these pale boys draped over a sofa [...] handing out Fifi glances to my own particular Pattern of Dress Goods.
1972		B. Rodgers Queens’ Vernacular.
1990		S. Morgan Homeboy 16: Joe said he’d seen neither fifi’d hide nor moussed hair of Dwan.