Green’s Dictionary of Slang

paddywhack n.

[Paddy n. (1) + whack n.2 (1) + negative stereotyping]

1. an Irishman, esp. when large and brawny; thus Paddy Whackery n.

[UK]Grose Classical Dict. of the Vulgar Tongue.
[Ire] ‘The Wee Wee Bag of Potatoes’ in Luke Caffrey’s Gost 5: My curse upon you Paddy Whack, you have ruin’d the ladies.
[Ire]J. O’Keeffe Sprigs of Laurel 31: 3. I’m Natty Jack. 4. I’m Paddy Whack.
[US]H.H. Brackenridge Modern Chivalry (1937) Pt II Vol. IV 729: God love your shoul, said the Paddy-whack, it is not you I am attacking.
[UK]W. Combe Doctor Syntax, Consolation (1868) 182/2: Whene’er you meet a Paddy Whack, / Think whose strength laid you on your back.
[UK]Berks. Chron. 28 May 3/3: Whenever a bull is made by any person, he is set down immediately for a Paddy-whack.
[US]A.M. Maxwell Run Through the United States I 121: The rail-road, which will be completed from Boston to this place [...] thanks to Paddy Whack.
[UK]London Standard 22 Oct. 3/3: An old song makes mention of a certain — ‘Paddywhack just come from Cork’.
[UK]Reading Mercury 22 Mar. 5/5: The Irish, or poor Paddy-whack, he might rap well.
[US]Clarksville Chron. (TN) 18 June 1/6: Downing [...] boasted [...] that he had Irish blood in his veins. This was too much for Paddy-whack [who] roared out ‘An’ was yer mother scared by a nayger?’.
[UK]Worcs. Chron. 18 Mar. 5/2: There would be a great danger of its being transformed by [...] Malapropian tongues in the sister isle into ‘Paddy-whack’.
[Ire]Event (Cork) n.p.: About thirty-five years ago there lived [...] a few miles out of Carrigaline, a celebrated character, nicknamed Paddy Whack. He earned the alias by frequent rows he got into [BS].
Pittsburgh Dispatch 27 Jan. 10/5: The millionaire’s son rubbing shoulders with the paddywhack from the tenements.
[US]G.D. Chase ‘Cape Cod Dialect – Addenda’ in DN III:v 421: paddywhacker, n. An Irish ragamuffin.
[US]Wash. Times (DC) 20 Oct. 5/2: What would she be doin’ [...] but fall [...] in love with Paddywhack himself, the same as what used to paddywhack her proper when she was a naughty little girl.
[Ire](con. 1890–1910) ‘Flann O’Brien’ Hard Life (1962) 40: But by gob it wasn’t like that when we had the Penal Laws, with Paddy Whack keeping a lookout for the soldiery from the top of the ditch on a Sunday morning.

2. in attrib. use of sense 1.

[UK]Lancaster Gaz. (OH) 18 July 1/5: My friend george [...] would be justle astonished were the ragged paddy-whack voters [...] to invade his lawn.
[US]Kentucky Irish Amer. (Louisville, KY) 27 Mar. 2/2: The Boston Citizen says: ‘If a check is not soon put on the Irish Romanists this whole country will soon resemble a vast Paddy-whack burying ground’.

3. (also paddywhacking) a severe beating.

[US]Wilmington Jrnl (NC) 1 Dec. 2/2: WEe do not want [the enemy] to slide away with impunity [...] to lose his paddy-whack.
[US]Dly Public Ledger (Maysville, KY) 29 Feb. 1/3: Paddy Whack! What a Pair of Toughs Got in the Police Court [...] Judge Wadsworth [...] directed Officers Stockdale and Purnell to give each of the lads a sound thrashing.
[US]Richmond Dispatch (VA) 25 Jan. 22/5: ‘Do you want another paddywhacking?’ demanded the boy.
[Aus]G.H. Lawson Dict. of Aus. Words And Terms [Internet] PADDYWHACK—A beating.
[UK]Framlingham Wkly News 29 Oct. 3/7: Up with your shick-shack or down comes a paddy-whack.
[US]Maledicta III:2 163: paddywhack n Thrashing, severe beating.
[US]H. Rawson Dict. of Invective (1991) 279: The Irish Paddy has been elaborated in various ways, e.g., [...] paddywhack, a stout Irishman, a rage or passion, and a thrashing or firm blow—the kind of smack or whack an angry Paddy might give you.

4. a rage, a passionate outburst of temper.

[UK]Kipling ‘In Ambush’ in Complete Stalky & Co. (1987) 46: Well, hold on, till King loses his temper [...] He’s a libelous old rip, an’ he’ll be in a ravin’ paddy-wack.

5. (Irish) stage or ‘professional’ Irishism, e.g. much use of ‘Sure an’ beggorrah, sorr...’.

[Ire]‘Myles na gCopaleen’ Best of Myles (1968) 278: Superimpose on all that the miasma of ironic usage [...] Irish bullery and Paddy Whackery.
[Ire]Sun. Trib. (Dublin) 4 Feb. n.p.: The story of an alcoholic who despite drinking 30 pints a day still holds down a job on the railways, is a ludicrous wallow in some never-never land of pub Paddy-whackery [BS].

In derivatives

paddywhackery (n.)

the attributes of stereotyped Irishness.

[UK]Taunton Courier 24 June 5/2: The gentleman [said] that he was an irishman to the backbone [...] he proceeded to give a most appropriate illustration of his ‘paddy-whackery’.
Irish Issue 70: Americans generally, and maybe those of Irish extraction more than others, ought quickly to shed their paddywhackery attitudes and their picture postcard, tourist notions of Holy (read Hollywood) Ireland.
D. O’Donovan Dreamers of Dreams 107: So many people here have an interest in Ireland but want no part of what I call the Green sickness, or our annual bout of Paddy whackery.
Bonsall Irish RMs 44: The stories were and are sometimes criticised for Paddywhackery or presenting ‘stage Irish’ for the amusement of arrogant Anglo-Saxons.
Cronin & Adair Wearing of the Green 240: [St Patrick’s day] is a day when Irish goods and companies are promoted abroad, and also when the purveyors of ‘paddy whackery’ have their day in the sun.

In compounds

paddywhack almanac (n.) (also paddy’s watch, paddywhack) [come (the) Paddy (over) under Paddy n., i.e. such an almanac confuses its user]

an unlicensed almanac.

[UK]N&Q Ser. 7 I 478: Before the tax on almanacs... a class of printers [sold] an almanack unstamped, and this was often called Paddy’s Watch. They were hawked about... sold at 3d, and often for less, when a stamped almanac cost 1s. 9d. or 2s. I have often heard... ‘Have you an almanac?’ and the answer has been, ‘We have a Paddy’.

In phrases

paddywhack the drumstick (n.)

(Aus.) a spanking, a thrashing.

[Aus]N. Keesing Lily on the Dustbin 82: When cheek persists, more old-fashioned adults may still threaten a taste of ‘Paddy-whack-the-drumstick’.