My thanks to the Ombudsman for the definitions of a few words of the Cy dialect in another thread.
In return, here is the OED reference to the oft used (in the rougher parts of South London ) word " Plonker "" - deserving I think of its own thread, given its common usage here. Perhaps this should be made a "sticky"?
(As well as meanings, below are also recorded first uses of the word.)
Plonker(noun)
A. The penis. Also in extended use.
to pull one's plonker: to masturbate; to pull a person's plonker: to deceive a person humorously or playfully; cf. to pull a person's leg at PULL v. Phrases 10a.
1949 E. PARTRIDGE Dict. Slang (ed. 3) Add. 1138/1 Plonker, penis: low: since ca. 1917. 1984 K. WATERHOUSE Thinks xx. 185 Why ever did you bother pulling me when all you're good for is pulling your plonker? 1988 Independent 21 Sept. 13/2 The 16,000 wives in the harem of Krishna used the sacred plonker as religious dildos. 1989 Re: Toothpaste, BMG & Columbia in rec.music.cd (Usenet newsgroup) 30 Oct., This, to my line of thinking, is someone pulling your plonker, so to speak. 1995 Empire May 110/1 Mr. Jobsworth realises I'm pulling his plonker and suggests I ‘leave’. 2003 Australian (Nexis) 24 June 13 Most male dogs have a u-shaped bone in their plonker.
B. A man who sanctions sexual relationships between his girlfriend and his male friends. Now rare.
1966 J. GASKELL All Neat in Black Stockings 72 If she'd been my daughter in fact I'd never have let her go out with an obvious plonker like myself. 1970 Sunday Truth (Brisbane) 13 Sept. 36/2 Do you know what a plonker is?It's a chap who shares his ladyfriends with his mate.
(I think this following definition c. is the context in which it is used in the Forum)
C. A foolish, inept, or contemptible person.
1981 J. SULLIVAN Only Fools & Horses (1999) I. 1st Ser. Episode 3. 30/1 Rodney! I didn't mean drive off! What a plonker! 1987 Times (Nexis) 22 Feb., [He] keeps the great lexicographers Fowler, Gowers and Partridge on his bookshelf at home, though Partridge, he opines with discernment, is ‘a bit of an ol' plonker’. 1988 Smash Hits 19 Oct. 9/3, I look at a dress and think because it's fashionable it'll look good and then I go out with it on and realise what a plonker I look. 2000 H. SIMPSON Hey Yeah Right (2001) 69 You're going to look a right plonker when the end of the world doesn't come, aren't you?
Interestingly from definition B - A man who sanctions sexual relationships between his girlfriend and his male friends; we are very,very close to the definition GR gives for the Cy word "pesevenghi". Coincidence or what?