What do they put in that stuff?

Right after brushing teeth, Maddie starts this conversation:

"Wanna talk to the sink!"
"You want to talk to the what?"
"The sink! But it needs a mouth first!"
"The sink needs a mouth?"
"Ok, now the sink has a mouth."
"Um, what?"
"The sink has a mouth to talk with!"

O...
k. Must go check the ingredients on that toothpaste now.