Earthquake, Hair-growth Solution, Flood & More

S1, E303: Yellow walks toward Red chewing gum and blows a bubble. The bubble floats in the air and pops on Red's head. Angry, Red tries a flying kick, causing an earthquake. Next, some unknown liquid falls into the drain and onto Yellow's head. Suddenly, Yellow's hair starts to grow. Later, Red and Yellow attempt to escape the flooded sewer!