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Penny and Amy are exasperated with Sheldon.
The Hot Tub Contamination - Season 10, Episode 5
Aired October 17, 2016.
When Sheldon and Amy start bickering over their living situation, Leonard and Penny step in to keep the pair separate and to give them advice on living with a significant other. Meanwhile, after Howard and Bernadette blow off a planned vacation, they observe a pair of unexpected guests in their hot tub.