Green’s Dictionary of Slang

goof up v.

[ext. goof v. (1d)]

(US) to blunder, to spoil, to injure.

[US]H.B. Hersey G.I. Laughs 130: [cartoon] Okay! Okay! Who goofed up?
[US]B. Schulberg On the Waterfront (1964) 26: And don’t goof it up.
[US]C. Cooper Jr Scene (1996) 233: I want it done [...] before somebody gets in that room and goofs up anything of value.
[US]‘Troy Conway’ Cunning Linguist (1973) 73: I had goofed up but foolishly sensationally.
[Can]R. Caron Go-Boy! 46: If somebody had goofed up, the sound of an open palm striking hard flesh would smack in the stillness.
[US]C. Hiaasen Tourist Season (1987) 222: If he goofs up, he waltzes into court, files a new motion, and fixes it.
[US]‘Randy Everhard’ Tattoo of a Naked Lady 94: I swerved the Menace to make her goof it [i.e. makeup] up.
[US]J. Hannaham Didn’t Nobody Give a Shit 45: It took a few near-accidents for Carlotta to fall in step, and even then she goofed it up.