I think Chuck pulled that one out of the air. There's also a Steely Dan song where they say "I was a dandy Gamma Chi" but as far as I know that's not a real fraternity either.

Chuck Berry song
 

I heard a Chuck Berry song and it goes "I met a German girl from England, who was going to school in France, and we danced the Mississippi at an Alpha Kappa dance."

Who are the Alpha Kappas? has anyone heard of this group?