Green’s Dictionary of Slang

a general term of dislike.

1973		J. Yount Trapper’s Last Shot (1974) 81: ‘That rat fucker,’ Claire said.
1990		J. Wambaugh Golden Orange (1991) 50: I mean, this little ratfucker’s gonna be trusted with a key!
1993		C. Hiaasen Strip Tease 98: Dilbeck and Rojo drank a toast to the greasy little ratfucker.
2003		Simon & Burns ‘Stray Rounds’ Wire ser. 2 ep. 9 [TV script] Fucking ratfuckers, all of you!
2018		C. Hammer Scrublands [ebook] ‘He played me, he’s blackmailing you, he coerced Avery Foster. The guy’s a ratfucker’.
2020		T. Pluck ‘Hula Hula Boys’ in What Pluckery Is This? (28 Jan 2024) 🌐 ‘I’ll file a grievance with the ombudsman, you cake-eating ratfuckers!’.