Season 7: Episode 168: The Shower
Debra gives a bridal shower for Amy, but her good intentions get sidetracked by Marie's overzealous participation. When Marie attempts to "take over" Amy's wedding shower, Debra gets upset and yells at her, prompting Marie to leave in a huff. Returning to the party festivities, Debra starts drinking a little too much champagne and winds up being too tipsy to drive. When she can't reach Ray on the phone, Debra decides to take a nap in her car with the keys in the ignition and is awakened by a police officer, who arrests her for drunk driving. When her license is suspended, Debra finds herself in a precarious situation when she's forced to rely on Marie for help.