Green’s Dictionary of Slang

Eastman n.

also easeman
[black pron. of yeast as east; thus the image of yeast as expanding and thus making a ‘big man’; or yeast = bread n.1 (2) = dough n. (1)]

(US black) a kept man, one who lives on money earned by a woman; a pimp.

Journal Amer. Folk-lore Oct. 354: The ‘Eastman’ is kept fat by the women among whom he is universally the favorite.
[US]Odum & Johnson Negro and His Songs (1964) 163: I got it writ on de tail o’ my shirt: / I’m a natu’el-bohn eastman, don’t have to work.
[US]Furry Lewis ‘Kassie Jones’ 🎵 I’m a natural born eas’man on the road again / I left Memphis just to spread the news [...] / Had it written in the back of my shirt / Natural born eas’man don’t have to work.
H.C. Brearley ‘Ba-ad nigger’ South Atlantic Quarterly 38 81: [The] nachel bohn Eastman, who may brag that he need not work ’cause I got it writ on the tail of my shirt.
[US]Berrey & Van den Bark Amer. Thes. Sl.
[US]L. Hughes Laughing to Keep from Crying 40: ‘A natural-born eastman,’ cried a tan-skin lady with a diamond wrist-watch. ‘He can have anything I got.’.