Green’s Dictionary of Slang

get over v.2

also get over on
[the physical act of ‘mounting’ a woman]

(US black) to seduce, to have sexual intercourse.

[UK]‘Walter’ My Secret Life (1966) I 64: What a nice girl that maid of yours is, I mean to get over her.
[UK]Farmer & Henley Sl. and Its Analogues.
[US]Fats Domino ‘Natural-Born Lover’ 🎵 Well, I done got over / I done got over, at last.
[US]N. Heard Cold Fire Burning 135: I was caught between the desire to brag, to let them know that I had ‘gotten over,’ and the deep sacredness [...] of my relationship to Terri.
[US] in N. George ‘Rappin’ with Russell’ in Buppies, B-Boys, Baps and Bohos (1994) 57: You’ll never hear any of our artists rapping about getting over on a woman in a vulgar way.
[US]N. McCall Makes Me Wanna Holler (1995) 39: He had ‘gotten over’ on some broad he’d been working on.
[US]W.D. Myers ‘law and order’ in What They Found 114: ‘I made like I was shocked that she thought I was trying to get over with her’.