I really don't know what I say repeatedly, so I asked Sarah. She thought about it for a minute and said, "Guess what I did at my workout today?!"
I do say, "Oh, my word" a lot. In stressful moments, I've also been known to say, "Hellfire and damnation!" much to the consternation of my entire family. XD Hannah always find that particularly shocking.
I'll just skip over what I say in stressful moments... but hellfire and damnation is pretty tame, really.