Green’s Dictionary of Slang

log n.

[visual or fig. uses of SE log]

1. a stupid person.

[UK]Comic Almanack May 54: How he did foam and rage, [...] And call the potboy hog, and dog, and log.
[Aus] ‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xxxvi 4/1: log: Dill.
[Aus]J. Alard He who Shoots Last 216: Y’ain’t stuck up no iron tanks before. Neither has ya big log of a mate.
[Aus] (ref. to 1960s) B. Hornadge Aus. Slanguage (1989) 171: He publically expressed the view that all foreigners [...] were wogs, dogs, bogs or logs.
[UK]Partridge DSUE (8th edn) 693: since early 1930s.
[UK]J.J. Connolly Layer Cake 110: They both have a natural talent to inspire irritation in plums and logs world-wide.

2. the chin.

[Aus]J. Furphy Rigby’s Romance (1921) Ch. xiv: 🌐 He gits home on the butt o’ the log this time. I drops agen, an’ rolls under the (adj.) billiard table.

3. (US drugs, also log stick) an opium pipe.

[US]A.J. Pollock Und. Speaks.
[US]B. Dai Opium Addiction in Chicago.
[US]D. Maurer ‘Lang. of the Und. Narcotic Addict’ Pt 2 in Lang. Und. (1981) 105/2: log. An opium pipe.
[US]Monteleone Criminal Sl. (rev. edn).
[US]Anslinger & Tompkins Traffic In Narcotics 312: log. An opium pipe.
[US]J.E. Schmidt Narcotics Lingo and Lore 103: Log stick – The pipe of an opium smoker.

4. a piece of excrement.

[UK]Roger’s Profanisaurus Rex 184/1: log n. Bum cigar, brown trout. [...] log fire n. The pain experienced in the back body the morning after eating a particularly spicy Ruby Murray.
[US]T. Dorsey Hurricane Punch 221: The big inside secret is how many turds they get in the mail [...] real logs.
[Scot](con. 1980s) I. Welsh Skagboys 39: First thing every morning a drop a log.
[UK]A. Wheatle Crongton Knights 10: I knew it was bad. the logs were about to spill over the toilet seat.

5. (Aus.) a large person.

[Aus]T.A.G. Hungerford Riverslake 113: Oh, one of the blokes in the kitchen got the sack. A big log valled Vodavitch.

6. (US) a bar counter [the wood from which it is constructed].

[US]‘Iceberg Slim’ Pimp 78: His delicate pinkie scooted the saw buck back to me across the log.

7. (US) the penis.

[UK]L. Dunne Goodbye to The Hill (1966) 76: Yeh, she’s a widow and from the way she trembles when you get near her nobody’s sunk a log there in recent months, so I’m going to give her one. [Ibid.] 176: After the number of times I sunk the log last night she’d never believe I was a brownie.
[Aus]B. Moore Lex. of Cadet Lang. 217: usage: ‘You going to show her your log tonight?’.

8. (US drugs) a marijuana cigarette.

[US] S.N. Pradhan Drug Abuse.
[US]ONDCP Street Terms 14: Log — Marijuana cigarette; PCP.

9. (US drugs) phencyclidine [? sense 2].

[US]ONDCP Street Terms 14: Log — [...] PCP.

10. an erection.

[US]Nasir Jones ‘Remember the Times’ 🎵 Was a horny dog, mornings waking up with a log.

In compounds

log stick (n.)

see sense 3 above.

rotten logging (n.)

(Can. campus) hugging and kissing.

[Can]Dly Atheneum in McGill Dly 19 Dec. 4: Hugging and kissing [...] Lollygagging, necking, pitching honey, smooching, tonsil swabbing, pawing, muzzling, flinging woo and rotten logging are other names applied to the same activity.

In phrases

do a log (v.)

to defecate.

Twitter 8 Dec. 🌐 Neil Kinnock did a log in my primary school friend's downstairs loo in Edinburgh in 1984 when he was attending dinner there.
flog the log (v.) (also slog the log)

to masturbate.

[US](con. 1950s) H. Junker ‘The Fifties’ in Eisen Age of Rock 2 (1970) 103: Back with the guys, who had probably been wacking (jacking) off, beating the meat, flogging the log.
[Aus]B. Moore Lex. of Cadet Lang. 145: usage: ‘Bill has locked his door. Probably going to flog the log’.
‘The World’s Largest Collection of Male Masturbation Synonyms’ at 🌐 Flogging your log.
[US] 🌐 ‘Words for Masturbation’ [...] 298. Slog the log.
[NZ] McGill Reed Dict. of N.Z. Sl.
go up a (hollow) log (v.) [the activity of a snake or lizard]

(Aus.) to hide.

Richmond River Herald (NSW) 27 Oct. 8/1: Every budding candidate for parliamntary honors [...] has either twisted right round or gone up a hollow log till the voting is over.
Richmond River Exp. (NSW) 23 Mar. 4/1: Meanwhile the calamity howlers, who contended the council was [...] bound to make a loss and reduce the ratepayers to bankruptcy, have gone up a hollow log.
[Aus]Baker Popular Dict. Aus. Sl.
log of wood (n.)

(Aus.) a dull, stupid person; thus log of ebony, a stupid black person.

[UK] ‘Plunder Creek’ in Bentley’s Misc. Feb. 128: You ’tarnal lazy log of ebony.
[Aus]K. Tennant Foveaux 309: You don’t mean to tell me you take any notice of a blasted log of wood like him?
[Aus]J. Alard He who Shoots Last 53: Yer a nice bloody log of wood Wrecker.
[NZ]McGill Reed Dict. of N.Z. Sl. 129: log of wood Stupid or lazy person. ANZ.
sink the log (v.)

see under sink v.

throw the log (v.)

(N.Z. prison) to shut the door.

[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 189/1: throw the log v. to shut the door.