I actually think there is a whole lot more to the story than this little blurb.
If you stop and break the word down a Frat is a brotherhood or organization and ZOG has come to be associated with Zionist Occupied Government. The term ZOG relating to Zionist Occupied Government did not appear in main stream society until the mid 70's but that doesn't mean it was not used previous to that time.
Given the fact that the Dodge brothers were Jewish I find it extremely hard to believe the the term Frat-Zog was meaningless.
~Michael