Green’s Dictionary of Slang

(Aus.) semen; thus as v., to ejaculate.

1916		Runic Rhymes: Souvenir H.M.A.T. ‘Runic’ July 3: Baa Baa Black hand / Have you any oof? / Yes sir, Yes sir / All that we can spoof.
1981		P. Radley Jack Rivers and Me 61: The amount of spoof is more important to Eternity than the size of your cock.
2014		me-stepmums-too-fuckin-hot-mate at www.fakku.net 🌐 Got carried away and spoofed right in ya’ gash.
2016		D. Whish-Wilson Old Scores [ebook] The circle-jerking, the smell of spoof everywhere, gash on everybody’s minds.