Quote from Haley in A Moving Day
Dr. Singh: [thudding] There's the heartbeat. Haley: Oh, it... it sounds so fast, is everything okay? Dylan: No, that's good. That's the way a baby's heart should sound. Dr. Singh: He's right. It's the sound of a very healthy... oh! Both: What? Dr. Singh: [thudding] There's a second heartbeat. Haley: A baby with two hearts? I didn't know I was pregnant when I ate that brownie!