Non-religious expressions
This is kinda freaky and childish, but I am actually quite unnerved by going aroind saying Holy Christ and sweet jesus and shit as expressions, it feels like I'm lying or betrying myself.
So I figured that I'd change these expression to scientific expressions instead, for example saying Bohr damnit instead of dod damnit. Some might say Niels Bohr played god by working on the Manhattan Project and he sure did damn quite a few people with the nuclear bomb.. Nevertheless a brilliant scientist ;)
Next one is Holy Darwin, instead of Holy Christ. As much as Jesus has been disputed, Darwin and his so called theory of Evolution has been disputed. Only difference though is that there are absolutely no proof of Jesus existance while the Evolution is proven every minute of every hour in everyday life. For example when we're sick and use meds to get healthy. Next time we're sick it's harder to get healthy again using the same amount of meds as the sickness evolves to better fight the medicine - thus you require more and stronger meds.
Another expression is just simply "Jesus". Or Geeeeezus. Here da Vinci works good instead. Mainly because it fits in to how you say it. da viiiiiinci.
Feel free to experiment with other big scientists and men/women of reason! "Einstein!" is pretty good instead of just "damnit" and Hawkins is pretty good as a "d'oh" kind of expression...
Ps. this post may be excused by extreme tiredness and boredom at work. Ds.

