A debonair Mexican man. The "bean" portion of the word is derived from the derogatory word, "Beaner", while the suffix, "soir", is added to indicate the dignified propriety of behavior that this person exhibits as the French language is synonymous with grace and civility.
Person 1: "Look at that beaner trying to be a gentleman"
Person 2: "He's not trying to be a gentleman. His refined demeanor is genuine. He is what you would call, a Beansoir"
An iconic quote my the man, the myth, the one and only Harry Styles when he got asked to tell us an unpopular opinion in which he answers that he prefers...
"a different brand of 𝓑𝓮𝓪𝓷𝓼 than the usual most popular brand of 𝓑𝓮𝓪𝓷𝓼."