S7E11: Marge Be Not Proud
Milhouse, do you ever worry that your mom might stop loving you?
What? I'm more worried about piranhas.
Did you see that movie where they sent a nuclear submarine to fight the piranhas,
and one of them swims right down the periscope and bites the guy in the eye,
and he goes, "Aah! Aah! Aah!"
and that old lady told him it would happen?