Green’s Dictionary of Slang

1. (Aus.) the penis [prick n. (1)].

1960		J. Franklyn Dict. of Rhy. Sl.
1972		Dodson & Saczek Dict. of Cockney Rhy. Sl.
1978		Maledicta II:1+2 (Summer/Winter) 118: He [...] also lists: [...] Mad Mick Prick.

2. (Aus./US) a pick.

1919		Aussie (France) X Jan. 9/1: There we were issued with ‘Banjos’ and ‘Mad Micks,’ as the Diggers call spades and picks, and set to work filling trenches, shell-holes, and levelling the ground for a new Aerodrome.
1924		G.H. Lawson Dict. of Aus. Words And Terms 🌐 MAD MICK—A pick.
1935		A.J. Pollock Und. Speaks.
1946		R. Rivett Behind Bamboo 397/2: Mad mick, pick.
1953		T.A.G. Hungerford Riverslake 224: I swung a mad-mick there for eighteen months during the depression.
1967		‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xxxvi 4/1: mad mick: A pick. Pick and mattock.
1972		Dodson & Saczek Dict. of Cockney Rhy. Sl.
2002		Pete’s Aussie Sl. Home Page 🌐 Mad Mick: a pick.