Green’s Dictionary of Slang

1. a piece of human excrement; thus as a contemptible person [= turd n.].

1968		J. Alard He who Shoots Last 60: Bluey Harold was a real Henry. He’s da woise I’ve struck in dis joint.
1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 31: Henry the Third [...] turd.
2000–02		Macquarie Dict. 🌐 Henry the Third noun a turd. Also, Richard the Third. [rhyming slang].

2. a word.

1983

R. Aven-Bray Ridgey-Didge Oz Jack Lang 31: Henry the Third Word.