A varient of the exclamation "oh my god," typically used to express shock or surprise. Substituting the word "rod" for "god" is a reference to the male genitalia, but does not necessarily suggest anything special about the circumstances under which the varient might be used. In general, this varient is simply used to invoke humor and is generally interchangable with the original form of the exclamation.
by Adam Apple February 04, 2004
by adam apple February 23, 2005