Three's Company - Season 2 - Eps 4: Strange Bedfellows
Chrissy and Janet go away on a trip, and Jack promises he won't throw a party. As soon as they're gone he goes back on his word. When Mr. Roper comes up to put an end to the party, he ends up joining in, but wakes up the next day in Jack's bed...WITH Jack, and he thinks he's gay.
About Three's Company

Title: Three's Company
First Air Date: 1977-03-15
Last Air Date: 1984-09-18
Status: Ended
Rating: 7.7/10 (from 160 votes)
Language: EN
Seasons: 9
Total Episodes: 171
Network: ABC
Genres: Comedy
Production Companies: Unknown
Synopsis
When two single girls, Janet and Chrissy, need a roommate to share their Santa Monica apartment, they decide to offer a room to Jack, a man they find passed out in the bathtub after the going-away party for their last roommate. However, hijinks ensure when Jack must pretend to be gay in order to throw off the scent of the trio's conservative landlady.
Cast

John Ritter
Jack Tripper

Joyce DeWitt
Janet Wood

Priscilla Barnes
Terri Alden

Don Knotts
Ralph Furley

Richard Kline
Larry Dallas