Episode #215 "Guilty As Dick"

When Dick sprains his ankle at the office while adjusting a vent for Mary, he's wracked with pain, while she's wracked with guilt that she's responsible. It doesn't take Dick long to start milking the situation for all it's worth as he demands that Mary and the aliens wait on him hand and foot. When his ankle starts to feel better, he goes to the doctor and demands that he make the pain come back, because he's not going to give up the luxury of being an invalid. Harry is so desperate for a room of his own that he builds himself a tree house. Tommy has no luck whatever selling candy bars to support the school's band until Sally dazzles the male customers and he starts setting sales records. And when everyone finds out that Dick is no longer injured but faking it, they do what they can to really make his life miserable and he ends up with his arm in a sling.