It's officially Cousin's Day, and for the first time in years, Ivy and Stuart get to celebrate it together. They try to outdo each other to make the holiday the best ever, but unfortunately, their plans keep backfiring. Guest Star: Daniella Monet

When Stuart's mom, Liz, finds out she is going on leave and can return home for a visit, the family sets out to make her homecoming a huge surprise for Stuart and Clark, but the reunion doesn't go quite as planned.