Green’s Dictionary of Slang

hamfat adj.1

[the stereotypical black diet is pig-based]

(US) a description of black people.

Beadle’s Dime Song Book No. 12 35: Hooche, houchee, kouchee, says the ham fat man.
‘The Ham-Fat Man’ in R. Howard Overlander Songbook 218: White folks attention, and listen to my song, / I’ll sing you a ditty, and I won’t detain you long! / It’s all about a pretty girl, whose name was Sara Ann, / And she fell deep in love with a ham fat man.