smeg, n. — Green’s Dictionary of Slang

smeg n.

[abbr.]

1. smegma.

2000

N. Griffiths Grits 277: That’s all wer made up of [...] — blood, brine, piss, spunk, tears, smeg, spew, snot.

2. a dirty, unkempt person.

1997–2001		Online Sl. Dict. 🌐 smeg n 1. something undesirable. May refer to people or unidentifiable substances. Etymology: from the word smegma. (‘You have smeg on you.’).
2000		N. Barlay Crumple Zone 199: Oi smeg, Ah’m talkin’.

In derivatives

smegging (adj.)

a term of abuse aimed at people or things.

1988		G. Naylor ‘Future Echoes’ Red Dwarf [TV script] rimmer: Oh, groovy, funky Channel 27. Big smegging deal. You livvies hate us deadies.
1993		P. David Imzadi 52: He said it’s happened to him on several occasions in the past and suggested that it might be time, and I quote, ‘to learn how to play the smegging thing’.
2001		J O’Connor Scenes and Stages 19: It’s the only thing in the whole of my miserable smegging life that hasn’t walked out on me.
2002		D. McMahon Dance of Knives 307: You treat me like some smegging little prick who would run out on you.

smeggy (adj.)

dirty, unkempt; lit. smeared with smegma.

2000		T. Blacker Kill Your Darlings 230: Struggling with those smeggy studenty jeans.
2024		J. Meades Empty Wigs (t/s) 151: [T]hese dotards equipped with pathetic excuses for their smeggy flaccidity.

In compounds

smeghead (n.) [-head sfx (1)]

a general term of abuse.

1982		Press & Sun-Bulletin (Binghampton, NY) 14 Feb. 36/2: [Valentine's Day message] Smeghead. You can’t always wear the corner seat spud in the barnyard under Big Rod’s cap. Hit thirty and I’ll bake your pie.
1988		G. Naylor ‘The End’ Red Dwarf [TV script] lister: I try and respect Rimmer and everything, but it’s not easy, ’cause he’s such a smeghead.
1993–2003		freak child Urban Dict. 🌐 smeghead somebody who is dirty (another insult). a twat.
1998		Sydney Morn. Herald 28 Aug. 24/1: [headline] Silliness for Smegheads.
2000		Sydney Morn. Herald 18 Dec. 12/5: [headline] It’s goodnight Smegheads one and all.

In exclamations

smeg! [SE smegma, penile secretions. Coined as a deliberate euph. for fuck! excl. by Grant Naylor, scriptwriter of the BBC’s Red Dwarf science fantasy series, from 1989]

a general excl. of annoyance, surprise.

2001

OnLine Dict. of Playground Sl. 🌐 smeg n. exclamation of surprise or disappointment.