Variation on choke the chicken. To engage in masturbation, while looking up women's skirts or looking at upskirt pics.

Named for Christopher Chope, British Member of Parliament, who opposed a law that sought to ban making upskirt photos and videos.
“What’s that old guy doing down there on the floor near the hockey team?”
“Oh he's just about to chope the chicken again.”
by Spangleburger June 15, 2018
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