Green’s Dictionary of Slang

lemon-squeezer n.

a man.

1901		Sydney Sportsman (Surry Hills, NSW) 23 Jan. 4/1: Meander inside, past the ‘Lemon’ squeezer in charge, and breast the bar.
2002		D. Shaw ‘Dead Beard’ at www.asstr.org 🌐 You imagine what it was like getting into a born and bred every night with a mad lemon squeezer like that.