Cross-examination

[Sarah]

When, typically, a man crosses a woman on a street or in a school for example and turns around to take a quick peek or glance at her [rear] as she continues to walk in the opposite direction.

Guy first sees a girl walking in his direction wearing skin-tights and waits for her to pass before he turns around to check out what he knows will be a view of her booty from behind as she walks. He always waits a few seconds instead of saying anything, he just pervly and shamelessly scopes her ass out without her every knowing.

[Raeanne Dimick]

the act of cross-examining (= asking detailed questions of) someone, especially a witness in a trial: