To touch an intimate part of an individual, where the touching was done against that individual’s will and the touching was done for the specific purpose of sexual arousal, sexual gratification, or sexual abuse.
Craig Kilborne is a Serial Cop-a-Feelist, when he was on the "Daily Show" he was known for grabbing women and making unwanted sexual advances toward them.
(v.) To touch an individual in an intimate manner, usually with sexual intent. Such an act is usually done without the persons consent and is also frequently met with hostility and/or violence.
This chick at the club was so crunk she was letting everyone cop a feel.
I think that someone copped a feel of my tits on that subway.