I still can't believe I remember this one:

Sung to the tune of "You're a Grand Ol' Flag"

She's a mean old bag
She's a nasty old bag
And forever she's filled us with hate
But we treat her sweet and kiss her feet
And tell her we think she's great
Let her curse at us
We will not raise a fuss
When she starts in to scream and nag
For we are all counting on what we'll get
From the will of that mean old bag

Debra Cowan