Short GBP/USD

Hi all,

While I was in finance class my lecturer talked about expectations a d he efficient market hypothetis.

What stuck in my head was what he said, he said anytime England ate playing a major tournament like euro 2012 or world cup and the loose he says the stock market for a day or two after will fall.

This has been proven on several occasions.

Does anyone buy this. I for instance thinks its true so I’m shorting GBP/USD.