Green’s Dictionary of Slang

willie n.5

also willy
[orig. in northern but non-dial. use]

1. the penis.

[UK]N. Dunn Poor Cow 88: It was a little boy, it had a little Willie.
[UK]A. Bleasdale It’s a Madhouse (1986) 113: He got his little willy out!
[UK]A. Hollinghurst Swimming-Pool Library (1998) 164: A Chinese youth whose tiny brown willy was almost concealed in his wet pubic hair.
[US](con. 1960s) M. Kingston Tripmaster Monkey 25: In the U.K., ‘willie’ means ‘weenie.’.
[Ire]B. Quinn Smokey Hollow 84: My friend Billy had a tenfoot willie, / He showed it to the girl next door, / She thought it was a snake and hit it with a rake, / And now it’s only two foot four.
[NZ]B. Stewart Broken Arse I ii: If I could get my Wee Willie Wimple to stand up by hisself, I’d be really happy!
[Ire]R. Doyle Woman Who Walked Into Doors 13: He had the lid up and his willy out when Daddy caught him.
[UK]Guardian 22 June 7: I love showing my willy.
[UK]G. Iles Turning Angel 181: Any man can be led astray by his willie.
[UK]S. Kelman Pigeon English 224: Did I make your willy go hard?
[UK]V. McDermid Out of Bounds (2017) 34: ‘The Orwell standing stones [...] two giant willies. End of’.

2. in fig. use.

M. Hastings in Times 25 June [Internet] The Trident deterrent replacement, again a big willy gesture for a little willy nation, inappropriate to our diminished status in the world.

In compounds

willie-warmer (n.) (also willy-warmer)

a small woolen ‘sock’ supposed to keep the penis warm.

K. Waterhouse Maggie Muggins 75: Knitting a willy-warmer for her vibrator?
N. Danziger Danziger’s Britain 147: EJ bought [...] a Willie Warmer, which the package claimed ‘keeps yours warm, willing, ready and waiting.’ .
[UK]N. Cohn Yes We Have No 351: My friend Astrid, who used to design custom-made willie-warmers.
M. Pagett Make Your Own Sex Toys [back cover blurb] Here, fully illustrated, are step-by-step directions for projects such as the Knitted Willy Warmer (to keep you nice and cozy).
willie-waving (n.) (also willy-waving)

acting, speaking or posing in an exaggeratedly macho fashion.

[UK]Observer Screen 26 Sept. 6: The corporate jargon ‘willy-waving’ is rarely this apposite.
OxfordStudent 27 Nov. [Internet] It was the worst debate I’ve ever attended, it was just a matter of willy-waving and, uh, these little squits just loving the sound of their own voices and making as much noise as they possibly could while saying absolutely nothing.
twitter 23 June [Internet] Next time Cameron wants a willy-waving match with his Eton pals, maybe go back to the bike shed rather than ripping the nation apart?
willy-welly (n.) [wellie n.]

a condom.

[US]D. Lypchuk ‘A dirty little story’ in eye mag. 8 July [Internet] The two of them dabbed the brush, danced the goat’s jig, dug in the whisker and swept the chimney until, just as he was about to do her a kindness, his sweater fell off and he had to put a new willy-welly on.

In phrases

wave one’s willie (v.) (also wave one’s willy)

of a man, to act in an exaggeratedly macho manner.

M. Newton ‘Linux Internet nanny software?’ posting 4 Jan. at LinuxUsa.org [Internet] That situation may change at some point in the next twelve months if Alston decides that he wants to wave his willy around a bit to show everyone how powerful he is.