Green’s Dictionary of Slang

Boss, the n.

[the use of sl. to ‘humanize’ the Deity]

(orig. US) God.

[US]Mencken letter 12 Nov. in Bode New Mencken Letters (1977) 37: If the practical joking of our humorous Boss ever gives me the chance to write about you in the past tense, I’ll consider it a high privilege to go through your manuscripts.
[Aus]S. Gore Holy Smoke 24: Some sky-pilot tried to dob it on me to go to church! [...] Better than hangin’ around the pub, he reckoned. Yair ... well his Boss wouldn’t’ve seen it that way.
[US]J.L. Gwaltney Drylongso 232: Satan [...] fell and the Boss hurled his ass down to low stones!
[Aus]R.G. Barrett Real Thing 44: He gazed up at the cloudy, bleak, July sky and gave a mirthless smile. You sure like to kick a bloke when he’s down don’t you boss.
[US]Webspirations 🌐 Memo from God To: YOU Date: TODAY From: THE BOSS Subject: YOURSELF Reference: LIFE I am God. Today I will be handling all of your problems. Please remember that I do not need your help.
[Aus]R.G. Barrett Mystery Bay Blues 150: Les looked up at the sky and grinned. You like me boss, don’t you.