Green’s Dictionary of Slang

1. (US black) to live in the swing of things, to be chic or fashionable; to be sexy.

1972		E. Shrake Strange Peaches 259: [of the Kennedys] She had the look of celebrity [...] a movie star’s smile that [...] said keep away I’m doing all right, his said we’ve got it going and I love it all.
1992		D. Burke Street Talk 2 49: She’s really got it goin’ on.
1999		‘Master Pimp’ Pimp’s Rap 135: Bobby Jones had it going on [...] He was doing all right for an old hustler.
2003		Schlesinger & Collinwood ‘Stacy’s Mom’ 🎵 Stacy’s mom has got it goin’ on / She’s all I want .
2006		G. Pelecanos Night Gardener 152: Remember how I looked before I had my boys? [...] I had it goin on.
2010		W.D. Myers Lockdown 15: Play asked him what kind of watch he was wearing, and as soon as he had to look down at it, we knew he didn’t have anything going on.

2. to possess skills as an individual or a group.

2008		W.D. Myers Game 68: [O]ne of those schools that never had a real big-time player but always had enough going on to mess with you if you showed weak.
2012		W.D. Myers Cruisers: A Star is Born 61: [W]hen she ran they knew she had something serious going on.

(US black) to be conducting a love affair.

1972		N.C. Heard To Reach a Dream 77: ‘I ain’t makin’ it with you no more. I got somethin’ else goin’ and you ain’t in the picture’.
1981		T. Wolff ‘Poaching’ in In the Garden of the North American Martyrs 150: ‘Who was that on the phone?’ she asked. ‘Have you got a little something going?’.
2012		W.D. Myers Cruisers: A Star is Born 17: ‘You don’t want Caren to think you and Zander have something going on. She’ll scratch your eyes out’.
2017		D. Jenkins Stick a Fork In Me 145: ‘[S]ome of them might think there’s something going on between the two of you’.