In the Friends episode " The One Where Chandler Can't Remember Which Sister " (Season 3, Episode 11), a drunk Chandler forgets which of Joey's sisters he hooked up with after a party, sparking a chaotic search for the right one. The episode also features Rachel getting a job with the help of Mark, which causes significant jealousy issues with Ross. It is notable for being the longest episode title in the series and the first to feature Chandler's name. You can watch this episode on Apple TV . The One Where Chandler Can't Remember Which Sister - IMDb