who the fuck cares really. This is such a fucking pointless insult.
Everyone chokes until the point where they don't.
We Germans had a history of choking against Italy, then we played them again and guess what: We won.
Everyone treats this as if it was some mental state that you are prone too, while in reality it's nothing more than the attempt to find an explanation for why a guy just happened to be on the loosing side more often than not.
You can loose 3 important games, everyone calls you a choker, then play the 4th, win that, and your dumb meme is dead. It's that easy.