Can You Eat Human Flesh With Wooden Teeth? - S2-E16
Revealing mistake: When driving back after leaving Jake in the rain, the rain that settles on the bonnet of the car starts to pool. On a moving car this doesn't happen. Therefore you can tell the car wasn't moving. (00:09:20)
Answer: That would be "Corey's Been Dead For an Hour" in season 4, episode 9.
Super Grover ★