Pronounced: ob-er-in-d
The act of completely throwing away an advantage (whether it be in sports,
games or life in general) where the end result is a complete and utter
lost or failure.
Origins: comes from the TV
show "Game of Thrones" where Oberyn Martell was winning a trial by combat and ended up losing the battle (and his life) due to his pride and him doing a monologue. His opponent was stabbed through the abdominal and was completely helpless on the ground.
Yet, he still managed to lose.
My
team was winning the championship
game, but we oberyned it and
lost.
I oberyned my chances with that girl I was seeing.
He oberyned the fight, and now it haunts him forever.