What is the French equivalent of "OMG"?

Question

I know the French equivalent of "LOL" is "MDR", but what is the equivalent of "OMG"? Not as a surprise expression, but as an expression of frustration online. Is it "OMD" (Oh mon Dieu), or something else?

Answer 1

"oh my dieu!"

Answer 2

It's probably simply "mon Dieu." The missing "Oh" can be replaced by the French tone and perhaps even facial expression.