Connor Clifton learned this the hard way during the game that featured his Buffalo Sabres and the aforementioned Cousins team, the Buffalo Sabres. During a moment in play, Cousins had just come around the Sabres net with his head a little low and was reaching for a puck. Clifton, who was seemingly trying to make a clean hit, followed through and connected with Cousins head, which caused him to fall to the ice, as seen below. For his efforts, Clifton was assessed a match penalty.