If I were you I wouldn't be laughing and mocking Fed. I wish luck to Murray if he meets Fed, but don't write off Federer, especially not on grass. You are being cocky. As a Nole fan the last player I want Nole to play is actually Federer.
You are right to fear Federer, he will beat the Gymnast comfortably. Thank you for the advice, but Federer has no chance against the Flying Scotsman. Not now, not ever. Murray will never lose to the Rog again. Certainly not in a major.
Only Nadal can stop his Royal Jockness.