They say the NFL is a copycat league, but Vikings defensive back Kris Boyd isn't trying to hear that ... especially when it comes to teams mimicking postgame celebrations.
Boyd unleashed on the Commanders and Taylor Heinicke ... after video surfaced of the QB iced out in chains, celebrating his team's stunning upset over the Eagles on MNF.
Kris' issue ... Heinicke's celebration was reminiscent of Kirk Cousins', when the Vikings signal caller rocked a bunch of big chains, topless, on the plane after beating the Commanders (Taylor's team) in week 9.