National Lampoon's Gold Diggers (2004)

Cal and Lenny are two con men who dream of the fabled "good life" that includes big bucks, cool parties, fast cars and hot women, especially dream girl Charlene. After a string of failed robbery attempts including a purse snatching that goes terribly wrong, Cal and Lenny turn to gold digging and scheme to marry the aging and inseparable Mundt sisters, Doris and Betty, who the boys had met during one of their many failed criminal endeavors. While courting the women in hopes of inheriting their Beverly Hills estate, Cal and Lenny learn that the sisters' apparent fortune came from their father's innovative use of a sausage casing back in the 20s, which resulted in the world's first condom. Unbeknownst to Cal and Lenny, the Mundt sisters are now destitute, and are only marrying the guys so that they can knock off their young suitors and collect on their new, generous life insurance policies. Soon the couples are wed and once the honeymoon is over, Cal and Lenny come out from hiding and find themselves in a livng hell. Betty and Doris are in much better shape, with much stronger libidos, than they could have ever imagined. In short, the sisters won't be dying anytime soon. If they are ever going to inherit the estate and wind up with the life they've so badly dreamed of, the guys will have to speed up the Mundt sisters' natural aging process. At the same time, the sisters need to get rid of Cal and Lenny before they realize that they've once again been duped.