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A portuguese expression that refers to the utmost perfection. When performing any given action, saying that you did it "À Calvão" means that you achieved perfectness and the unsurmountable.
If you score very high in a test you say: "I did it À Calvão."

When you roll a perfect joint you say: "This is a À Calvão style joint!" or "This joint is really À Calvão".
by Pipirilampo January 14, 2011