I have been trying to find the episode where he talks about monsters that are almost human, but have two rows of teeth. I took all the mp3s I collected of the

I have been trying to find the episode where he talks about monsters that are almost human, but have two rows of teeth. I took all the mp3s I collected of the show, dumped them through dictation, and grepped like a madman. I have a real appreciation for people that are good at this. We listened to it in the late 90s as teens turning 20 and we would be absolutely petrified by the combination of being that age, from that time, and up that late. It was great.