Ok so this one is similar to the You don't ____ into Mordor one, only a bit different. For those who have seen the Eddsworld animations, this should be something you recognize.
The idea is to create a interesting, odd, or random way of "holy crap!" only replacing the "crap" part with something unique. For example:
"Holy robots in rebellion!" I know...very lame example, but I think you get the idea. I hope to see a lot of very unique phrases. ^_^