(Lisa finds old baking soda in the fridge)
Bart: Hey, Dad. Betcha five bucks you can't eat the whole box.
Homer: Five? Why don't we make it fifty?
(He slaps a $50 bill on the table)
Homer: Ooh, you're going to regret this.
Lisa: I'll call poison control.
(She dials the phone)
Lisa: Fran, it's me. Just a heads-up.