Kylie then comes up with a plan. They'll make Penny THINK that Lexi has left the house, but in reality, she'll be waiting in the bathroom. Kylie will then pretend to take a 'shower', but she'll actually be fucking Lexi in the bathroom. The plan works, with Kylie and Lexi managing to be alone together in the bathroom with the door closed. Kylie and Lexi have playful sex outside of the shower, but leave the water running so Penny will think that Kylie is just taking a shower.
However, Penny starts to wonder what's taking so long, and barges into the bathroom to complain that Kylie is using up all the hot water. Penny is upset when she realizes that the girls tried to deceive her and are also wasting water, so she marches them out of the bathroom for discipline. Penny gives the girls a spanking, but quickly becomes aroused. She tells the girls that if they're going to have sex, they'd better have a threesome with her, just so she can make sure they're doing it safely. It's clear that Penny is just making excuses because she's so turned on, but Kylie and Lexi aren't complaining!