Ted and Robin discover that sex with each other solve their fights as roommates, which makes Barney very jealous and angry. Meanwhile, Marshall reveals that he's too embarrassed to use the office bathroom.
Quest roles:
Bryan Callen(Bilson), Ethan Dizon(Ben), Kendra Wilkinson(Kendra Wilkinson), Kim Kardashian West(Kim Kardashian), Spencer Pratt(Spencer Pratt), Heidi Montag(Heidi Montag), Greg Collins(Matt Zinman), Kevin Kirkpatrick(Donald), Ambrit Millhouse(Jill), Jason Rogel(Clerk), Jack J. Bennett(Craig Gerard)