A note about season numbering. This is Season 13 according to wikipedia and TheTVDB (sources that drive apps like Kodi & Plex). TVMaze reports this as Season 12.
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Season: 13
Episode: 12
Title: The Dentist's Wife
Summary: Roger loses his identity after becoming fascinated by a local dentist's wife. Meanwhile, Klaus throws a party when Stan and the kids are unable to move from being sore after working out.
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