Green’s Dictionary of Slang

cop it v.

[cop v. (3a) + SE it; ‘it’ being trouble]

1. [late 19C+] to get into trouble, to receive a severe reprimand.

2. [20C+] (also cop) to be hit, to suffer in a given way, to die.

3. [1980s+] (Aus. prison) to be the passive member of a homosexual couple.

In phrases

cop it hot (v.) [hot adv.]

[late 19C+] to get into trouble, to receive a severe reprimand.

cop it sweet (v.) [sweet adv.2 (1)] [1950s+] (Aus.)

1. to accept problems without complaining; to get one’s due deserts.

2. to have a stroke of luck.

3. to relax.