Maybe you're religious and don't want to use the name of God in vain. Maybe you're an atheist and don't want to say the name at all. Or maybe you're just tired of sounding childish every time you're surprised and blurt out "OMG. No way!" No matter what the case may be, here are a few replacement phrases to OMG that you should start using today:
1. Great Scott
If you say this in front of a fan of Back to the Future, they'll appreciate your reference to Doc Brown. Of course, you could always steal Marty's line instead and say, "This is heavy."