“…so fast it’ll make gods blink.” I think that one comes from one of the Yellowthread Street books. It’s generally preceded by some interesting comment, such as when I’m attempting to exit a subway car here and some idiot wishing to board the car cannot be bothered to wait for those of us exiting–mind you, this is nowhere near a slightly occasional instance. Example of usage: I’ll knock you off the platform so fast it’ll make gods blink!"
“Znidd suddabit!” This one comes from Uller Uprising. Used as a general oath, although, according to the story from which I lifted it, it means “Kill the human!” (The word for ‘human’ in the language referred to in the story is a loan word from English: ‘Son of a bitch’.) Kind of fits in nicely as an alternative for the previous oath in the same situation.