The tension is building as the MythBusters explore physics myths on friction and pressure. First, can a water heater really explode like a rocket? Adam and Jamie track the temperature and pressure inside a heater to see the potentially explosive effects of water vapor. Next, Tory, Kari and Grant investigate blue jean myths. A myth on jeans and cowboys creates some friction for Tory (literally), and Grant serves as the test dummy to see if shrinking jeans in a hot bath can harm blood circulation.

Teacher's guide available under Additional info tag.