Lois: Aha! No coaster. Look at that ring. That is why I have to move out of this house.
Malcolm: Mom.
Lois: Every time you boys thoughtlessly mar the furniture by refusing to use coasters, what are you doing?
Boys: Killing the baby.
Lois: Killing the baby. Every time you run through the house, every time you destroy furniture, every time you fight with each other, you are killing the baby.
Hal: Lois, the doctor just said you should avoid stress.
Lois: Which is just medical jargon for the simple fact that every time you boys misbehave, you might as well be taking a knife and putting it in that baby's tiny little heart.
Malcolm: Will you stop saying that?
Lois: I just hope you boys have the character to channel the horrible guilt you should be feeling Into better behavior while I'm gone.
Boys: We're sorry.