
When Kendall and Roman Roy were kids, they played a game called Dog Pound. The rules were simple: Kendall locked Roman in a kennel and forced him to eat chow out of a metal bowl. Maybe Rome stayed in the kennel for a few minutes. Maybe it was an entire afternoon. Maybe there was a leash involved. But only Ken determined when Roman could come out.
Roman blurts this out in the "Prague" episode of "Succession" in Season 1 as he's crashing a secret meeting between Ken and Sandy Furness, one of Logan Roy's archenemies. Both Sandy and Ken are taken aback by Roman's squeamish memory recall, especially when Rome cites it as the reason he "went weird," causing their father to ship him off to military school. Ken thinks he's making it up.