Green’s Dictionary of Slang

1. (gay, also daffydill) an effeminate young man; thus daffodillic adj. in cit. 1925.

1925		S. Lewis Arrowsmith 265: Houses somewhat impersonally decorated by daffodillic young men from Chicago.
1928		A.C. Train Ambition 19: Some of the younger and more daffodilic masters were exceptionally kind to little boys.
1938		D. Runyon ‘Tight Shoes’ in Runyon on Broadway (1954) 472: Somebody back in the crowd pegs an egg at Calvin Colby’s high hat, and cries out [...] ‘Look at the daffydill’.
1942		N. Algren Never Come Morning (1988) 151: Walk around, Daffodill. We want to see how you look when you walk.
1957		J.M. Hosking ‘An A.I.F. Grouch’ Aus. First and Last 120: The N.C.O.s are ‘daffodils’, who haven’t got the guts to fight.
1966		Trimble 5000 Adult Sex Words and Phrases.
1972		B. Rodgers Queens’ Vernacular.
1981		J. Wambaugh Glitter Dome (1982) 36: Department daffodils is what I think.

2. a young male prostitute.

1955		J. Blake letter 10 Oct. in Joint (1972) 70: A tall blond daffodil from Alabama, in for being caught flagrante delicto on a beach with an inflamed soda jerk or bicycle mechanic or that ilk.
1979		Maledicta III:2 220: Similar terms, such as [...] UK daffodil (with perhaps some influence from Dilly Boy = Piccadilly Circus boy prostitute, reinforced by dolly boy = pretty young thing) may be more localized.