Do a half assed job

S08E13 - Simpsoncalifragilisticexpiala(Annoyed Grunt)cious

After discovering that she is losing hair at an alarming rate, Marge visits Dr. Hibbert, who informs her that stress is the cause. The Simpson family decides to hire a nanny who can help clean the house and take care of the children, but have trouble finding the right one. Bart and Lisa sing a song about what they would consider as the perfect nanny and when a woman with an umbrella glides down from the sky and introduces herself as Shary Bobbins, she seems perfect and is hired.

Bobbins proves helpful for the Simpson family. Marge recovers from her stress and her hair returns to normal. The next day, as the reformed Simpsons sit down to a perfect dinner, Bobbins declares her work finished, but after leaving the house, she sees Homer strangling Bart as they are smashed through the living room window, Maggie attempting to put out a fire, and Marge losing her hair again. With the family reverting to its previous state of dysfunction, Shary is forced to stay.

The family then treats her rudely and loses interest in her zest for life. Declaring that the Simpsons would be the death of her, she becomes depressed and starts drinking. The family realizes what they have done and Marge admits to Shary that nothing can be done to change the Simpsons. Through song, they state that they are happy the way they are. Shary accepts this and leaves using her magical umbrella and although Homer suggests that they might see her again in the future, she is seen getting sucked into a jet engine in the background, unbeknownst to the family.

Source: Wikipedia