It's a phrase used to encourage or celebrate Cajun culture and heritage. It's often used in a similar way to "Go team!" or "Go Dawgs!" at sporting events.
Here's why it's spelled that way:
* Cajun pronunciation: In the Cajun dialect of French, the "go" sound is pronounced as "geaux".
* Emphasis: The spelling emphasizes the Cajun identity and sounds more like a chant.
So, "Geaux Cajins" is a fun and enthusiastic way to show your Cajun pride.