This song just sounds like summer to me. Like cotton skirts, sunshine, and flip flops.
I found this song through Jon Acuff who, among other things, writes Stuff Christians Like. He mentioned "Hey Mama" in a blog about 4 Types of Modern Christian Songs. If you are running a little low on satire in your life...I am prescribing his blog. As a pharmacist's daughter, I am totally allowed to do that.