Green’s Dictionary of Slang

a drink, rendered facetious by this arch baby-talk.

1931		Vanity Fair Book 24: A little drinkie they learned, did wonderful things for a woman : it dulled her critical faculties (and should the average husband complain), it intensified her emotions, made her feel younger, more desirable.
1941		S. Gibbons Rich House 110: Cheerio, and thanks for the little drinkie.
1942		letter 15 Oct. in Ego 6 (1944) 53: I did enjoy the brief drinky-winky with you and Leo. Love, Jock.
1944		J.E. Brown Your kids & Mine 184: ‘Hey, Joe, how about a little drinkie?’ they shouted, hardly able to stand up.
1952		K. Vonnegut ‘The Package’ in Bagombo Snuff Box (1999) 48: Well, mama, what say we have a little drinkie, and then take a tour of the place?
1957		G. Kersh Fowlers End (2001) 192: What say we have a little bit of a drinkie?
1960		W. Styron Set This House on Fire 97: Wendy doesn’t want another drinkle.
1962		F. Norman Guntz 114: How about a little drinky-winky.
1967		J. Orton Diaries (1986) 12 Feb. 85: We went into the lounge and had what Kenneth called ‘drinkies’.
1976		N. Thornburg Cutter and Bone (2001) 177: The three of us here together again, old palsies having a few drinkies.
1980		‘John le Carré’ Smiley’s People 171: Darling, get the old soak another drinkie.
1981		J. Sullivan ‘Cash and Curry’ Only Fools and Horses [TV script] I’ve had a few, you know what I mean, a few drinky poos.
1983		J. Byrell (con. 1959) Up the Cross 47: ‘’Ow about a little drinkie-poos with me?’.
1995		C. Hiaasen Stormy Weather 24: Let’s have a drinky poo.
1999		T. Dorsey Florida Roadkill 70: Another drinky-winky, mister bartender man.
2001		K. Waterhouse Soho 83: Finish our drinkie-poos and all round to my place.
2023		R. Milward Man-Eating Typewriter 83: ‘Drinky-poos, Raymondo!’.