The Blame Game Airplanes

S14, E119: Marcos accidentally breaks an art show project that Melanie has made. Afraid that she will be angry, he doesn't say anything, but then feels guilty. Barney helps him see that honesty is the best policy. BJ brings his new toy plane to the park. Riff borrows it and takes it apart out of curiosity. When BJ finds out, he isn't mad and shows Riff how to put it back together.