In reference to "We's" ("We's are goin' downtown!") I agree that this is totally wrong. "We's" is clearly a contraction for "We is". Thus, folling it with an additional (plural) verb is just not right. I have taken the liberty of correcting one other glaring error. The sentence should properly read: "We's a-goin' downtown!"

For some reason this all reminds me of a prep order I once received when I was a hospital orderly. Some fine, young nurse from the backwoods had written instructions for preparing a man for testicular surgery. The order, as she wrote it, said: "Please shave Mr. _______ 's growin area." (She spelled it exactly as she pronounced it!)