Plot summary
George is caught masturbating by his mother, who throws her back out and gets hospitalized. The shameful ordeal makes George swear off masturbation, but, seeing the group's disbelief, he starts a wager to test who can hold out the longest. Kramer gives in at first opportunity, leaving everyone else tempted by powerful sexual fantasies: a naked woman across the street appears in Jerry's window while Marla is reluctant to lose her virginity to him, George starts ogling the silhouette of a woman receiving sponge baths in his mother's hospital room, and John F. Kennedy Jr. comes on to Elaine at aerobics class. In 2009, TV Guide ranked this episode as the greatest episode of any television show.
Credits
Adapted from Wikipedia contributors, Seinfeld season 4. HTML formatting and reference markers removed.