Mythbusters: Season 3, Episode 6

3 - 6: Quicksand

Everyone knows that laughing is contagious. But what about yawning? In this episode the Mythbusters and "Mythbuilders" test: -If Yawning is contagious. -They test the urban legend that says that he buttered side of a toasts always ends up "facing" the floor when the toast falls -Finally, they see if a toy car can beat a racing car in a gravity slope race.