That's pretty funny. Go ahead and run Chrome, then pick preferences. Scroll down to the bottom and take a look at default browser. Does it say "Chrome is already your default browser?" If so, I'm sure you can go in Safari preferences and switch it back. Though I have no idea why anyone on a Mac would make Safari their default browser. It's almost as bad as making IE your default browser on that other OS. 😀 But if that what you want to do, as long as you have your OS and Safari updated then go for it.