fuck my nostril! ...? or: for fucking out loud! both borrowed from Ergaste in 'by light alone', Adam Roberts.
I'm a fan of the TV Series Supernatural so I have been exchanging 'god' for 'Chuck'.
TGIF becomes TCIF
OMG becomes OMC
otherwise, the word 'god' is an abstract concept anyway, once heard it defined as "that which nothing greater can be thought" and from that I feel I can still use it. Oh MY god which would be the universe, I can think of nothing greater.
Lol.. I say it all the time.. don't give it one thought.. sometimes I say .. oh my stars.. or shit dam!!!
There are a lot of words for "god", gosh, Greasy Grimy Gopher Guts, goodness think of anything that begins with "G".