However , when Bill 's anti-German mother also arrives , Jenny suspects the day will not be a smooth one .
Ben and David attempt to fix the wall they have destroyed while Jenny prepares for her boyfriend and German grandmother 's visit to the Porter household .
When Bill 's anti-German mother also arrives , Jenny suspects the day will not be a smooth one .
Ben and David attempt to fix the wall they have destroyed while Jenny prepares for her boyfriend and German grandmother 's visit to the Porter household .