S07E21: The Shower

Debra throws the bridal shower for Amy, but her good intentions get sidetracked by Marie's overzealous participation. This leads to a fight between the two and Marie winds up leaving. Debra then gets a little to much to drink and ends up falling a sleet in her car with the key still in the ignition. She is awoken by a police officer who arrests her for being drunk behind the wheel.