Great Calamity Kittens!
An exclamation, similar to great scott!, making its first appearance in the Wonder Woman comic Sensation Comics #7 (July 1942). Later popularized by cracked.com in its article "The 6 Most Pointless Supervillain Schemes".
'A dead woman.' That must mean the Baroness! But Paula was electrocuted- great calamity kittens! I'm going mad!