9. OMG!

Image Source: David Adamson
WTF, I can’t believe OMG made it into the dictionary, lol… I bet you don’t believe it either, but it is. The trick now, is getting your parents/grandparents to say OMG somehow… PMSL if that happens.
Officially,omg;
- (chiefly Internet, slang) oh my God.
- (chiefly Internet, slang) oh my gosh.
- (slang, feminism) oh my Goddess.
- (chiefly Internet, slang) oh my Goodness.
Usage notes
Variants include omfg (for oh my fucking god), omgz (emphatic, for oh my gods or oh my goddess), and zomg (emphatic, in the same sense of lolz).