Green’s Dictionary of Slang

rinse n.

[rinse v. (1)]

(Aus.) an ejaculation of semen.

[Aus]R. Aven-Bray Ridgey-Didge Oz Jack Lang 9: ‘Well, I need a rinse like a mongrel dog needs a thrashing, I haven’t had an empty since the cheese stalled over a month ago,’ he confided to this by now, attractive stranger.