"Oh Toilet Bowl!"

Lizzy: "I learned a new song. Wanna hear it?"
Me: "Of course."
Lizzy, singing: "Oh toilet-bowl, oh toilet-bow.. how lovely are you."
Me: "Um, Lizzy.. I think you mean 'Oh Tannenbaum'.. it's like 'Oh Christmas Tree.' You know that song right?"
Lizzy: "Oh! I thought it was toilet-bowl. Oops!"