cop deuces, v. — Green’s Dictionary of Slang

cop deuces v.

[rhy. sl. + cop v. (3c) + deuce n.¹ (1); ? ref. to the losing roll of two in craps dice]

(US prison) to make excuses.

1992		Bentley & Corbett Prison Sl. 92: Coppin’ Deuces When an inmate says or does something wrong, then makes excuses or pleas of innocence for what he has done.
2006		Prison Slang Mommyblogger mydogharriet.blogspot.com 26 Sept. 🌐 She might cry and say you crossed her out, but like I said, dont be copping deuces.