Green’s Dictionary of Slang

(US campus) an attractive (older) woman, thus dilf, dad...; also attrib.

1999		A. Herz Amer. Pie [film script] milf guy #2: Dude that chick’s a MILF! milf guy #3: What to hell is that? milf guy #2: M-I-L-F Mom I’d Like to Fuck!
2001		Eble Campus Sl. Fall 7: milf – (mother I’d like to fuck) sexy female.
2005		P. Howard Curious Incident of the Dog in the Nightdress 76: She was a total MILF, as in Mother I’d Like to Fock.
2015		L. McInerney Glorious Heresies 37: [S]he couldn’t get her head around a young fella wanting to get close to Tara Duane, no matter how overpowering his MILF fantasies.
2017		T. Spicer Good Girl Stripped Bare 149: These are the years PM — Pre-MILF — and mums aren’t seen as alluring.
2019		N. Walker Cherry 311: Arnold put together a massive file of that shit—gang bangs, barely legal, cum shots, anal, ass to mouth, lesbians, bukkake, MILFs, humiliation.
2021		L. McInerney Rules of Revelation 58: ‘Is it that big a deal that a MILF had her wicked way with you?’.
2022		Twitter 19 June 🌐 Happy #DILF day to those who celebrate xoxo.
2024		J. Meades Empty Wigs (t/s) 584: ‘Try your luck with those doughy Michelin Milfs’.