Green’s Dictionary of Slang

1. (US/Aus.) to hit someone on the head.

1889		Dead Bird (Sydney) 14 Sept. 7/3: Better than the Scudan goat, / Ernie’s won his stripes afloat; / Having ‘skulled’ his man for sure.
1942		Cincinnati Enquirer (OH) 26 May 14/5: He has been under terrific strain trying to keep his streak intact, ever since he was ‘skulled’ last seasoin.
c.1951		N. Algren ‘Watch Out for Daddy’ in Entrapment (2009) 144: Had Enright not walked out from behind the bar just as Beth pitched the shot-glass it would have skulled me instead of him.
1961		Indianapolis Star 2 Apr. 46/4: He was skulled by a foul line drive.
1978		P. Hamill Dirty Laundry 59: I skulled him with the gun butt.
1990		S. Morgan Homeboy 174: I know it was Rooski skulled the gook.
2001		Week (US) 29 June 38: Call it [...] 7-7 and nobody would skull you with a chair.

2. (orig. US black) to perform oral sex.

1990		S. Morgan Homeboy 136: Olivia was busy skulling a patron in a back booth.
1997–2000		College Sl. Research Project (Cal. State Poly. Uni., Pomona) 🌐 Skull (verb) Oral sex.

3. (Aus./N.Z., also scull, skoll) to gulp down a drink [SE skull, into which it is poured + skol! a toast].

1975		‘Bluey’ Bush Contractors 177: Danny broke even time and was back with a bottle of whisky for Maurie. Maurie finished his last drink by skolling it straight down.
1985		Tracks (Aus.) July 18: The jug skulling sounds pretty heavy ay, but none of us fucken won anyhow [Moore 1993].
1986		R.G. Barrett Godson 172: Les sculled his first bourbon.
1992		K. Lette Llama Parlour 82: I skulled my margherita.
1993		B. Moore Lex. of Cadet Lang. 324: scull to drink alcohol (but especially beer) very rapidly: usually glass after glass in quick succession.
1997		L. Davies Candy 162: We skolled two more glasses of port each.
2005		J. Salazar Legion of the Lost 224: I opened another bottle of the ruby-red that I'd smuggled in and started skulling it.
2003		Aus. Ultimate (Sydney) Oct. 8/3: If either of your stubbies is knocked over, you have to scull from your full stubby.
2003		McGill Reed Dict. of N.Z. Sl.
2004		L. Redhead Peepshow [ebook] I opened the minibar and skolled a tiny bottle of vodka.
2007		D. McDonald Luck in the Greater West (2008) 12: Nat skulled a bourbon.
2013		D. Whish-Wilson Zero at the Bone [ebook] [K]ids started to head down the front, to stand before the black wooden stage, drinks sculled and ciggies put out.
2017		T. Spicer Good Girl Stripped Bare 83: I attempt to fit in by skolling shots with the boys.
2021		C. Hammer Opal Country 105: [T]he man sculls a schooner in one go.