Green’s Dictionary of Slang

fuck around v.1

[fuck v. (1) + SE around]

to have a sexual relationship (often used to suggest promiscuity).

H. Miller Letters to Emil 76: I fucked around with this one and that.
[US]H. Miller Roofs of Paris 201: Does she know that you’ve been fucking around with her father?
[US]M. Braly On the Yard (2002) 258: ‘You can’t be fucking around with no woman,’ Stick said severely.
[US]L. Kramer Faggots 39: His current lover’s penchant for fucking around elsewhere.
[US]D. Woodrell Muscle for the Wing 86: Do you think Ronnie fucked aroun’ on you?
[US]J. Wambaugh Finnegan’s Week 317: So he’s out fucking around on you too, huh?
[US]E. Little Another Day in Paradise 213: I don’t fuck around, Bones. I got an old lady.
M. Doner Infinite Darkness Infinite Light 23: Basically it [i.e. a memo] says, ‘No fucking around with the students.’.
[UK]Jade LB Keisha the Sket (2021) 48: I had been fuckin around with this guy 4 abat 2 montths.
[US]C. Stella Joey Piss Pot 34: ‘I can leave whenever I want. She don’t care. [...] I almost wish she’d fuck around and gimme a reason’.