Leisure Suit Larry 6: Shape Up or Slip Out! is the fifth entry in the Leisure Suit Larry series of graphical adventure games published by Sierra On-Line and is a sequel to the 1991 video game, Leisure Suit Larry 5: Passionate Patti Does a Little Undercover Work. Originally developed for MS-DOS in 1993, an enhanced CD-ROM version was published a year later.

Leisure Suit Larry is an adult-themed sex comedy video game series created by Al Lowe. Drawing inspiration from Softporn Adventure, the Leisure Suit Larry series centers on Larry Laffer—a middle-aged man known for his balding head, penchant for double entendre, and iconic leisure suits. The stories typically focus on his unsuccessful attempts to seduce young women, portraying him as an unsuccessful pickup artist. A common link between the games are Larry's explorations of luxurious and cosmopolitan hotels, ships, beaches, resorts, and casinos.