Plot: Tempers flare and insults fly when the Sharks fight over an innovative three-in-one nail polish invented by a mother of six girls from West Hartford, CT, who had to sell her engagement ring to start her business. A husband and wife team of feisty New Yorkers believe they have the next big thing in women's accessories; two Pittsburgh hockey moms pitch their home-grown tank top business with interchangeable straps; and a couple from Pasadena, CA insist that their unique sippy cups be manufactured in the USA to maintain quality