Season 4: Episode 81: Debra's Workout
Ray is bewildered, but not altogether displeased when Debra starts initiating sex on a more than regular basis. He can't believe his luck--and good fortune when as a result of Debra's new behavior it's as if he and she were newlyweds again. Ray is even willing to give up his golf game to satiate Debra's desires. But, never able to leave well enough alone, Ray looks for a reason behind her sudden burst of energy and gets a crushing blow to his ego.