Oberyn Martell, you violated the #1 rule of fights to the death: never assume the fight is finished until you place that person's head on a spike yourself.
Have to say, though, that as soon as Martell started gloating at the end, I knew he was a dead man. I mean, why would this show ever allow justice to be served? Still tough seeing Cersei with that shit-eating grin on her face.
a terrible blight on our fine country