Green’s Dictionary of Slang

(US) a euph. for fuck v. (1) / fuck v. (3)

1938–46		in G. Legman Limerick (1953) 274: You get three in one — / A ducking, a douche, and a diddle.
1947		B. Schulberg Harder They Fall (1971) 135: He won’t listen to anybody about training — tells Danny McKeogh to duck himself.