"She thinks him and his brother are swimming in the shallow end of the gene pool. "

The sound more like floaters than swimmers.

Does anyone know if (at least back in the day) the mob had rules about physical condition? I know that they've always had some fatties, but has anyone ever been too fat? I would think that if you were so fat that you weren't intimidating, then it would be hard to collect debts etc. Has anyone ever been whacked for being too fat?