Lyric discussion by slrarp 

I think anthonymed had this right for the most part. This song is about how party-goers (particularly male) can be pathetic.

They go to bars/clubs and "begin to kill the calm." They give in to drinking which lends themselves more to the lewd behavior. ("give in to give in more")

The cat in this case is a girl one of them was trying to pick up at the club, who probably slapped him for saying something offensive ("scratched at me first"). Watching "the tail" is like watching her leave the club, walking out on them. He's saying "way to go boy" sarcastically because the boy offended her and ruined any chances of hooking up with her. The boy in this case is also a "scheming devil" in in that he was trying to take advantage of her, they "never make it through."

The name "Mexican Sun" refers to how such types of people will take trips to Mexico because they think they can get away with party activities that are deemed illegal in the United States. In the chorus, they are on the beach, again being 'macho' and not caring if the sun burns their skin.

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