Green’s Dictionary of Slang

conjugals n.

1. sexual intercourse, esp. in a marital context.

[UK]Partridge DSUE (1984) 248/2: C.20.

2. (Aus.) the male genitals.

[Aus]S. Maloney Stiff 34: [Y]ou’ve got to keep it in mind that at that point my conjugals hadn’t had an airing in six months.