Play It Cool, Guys Temporada 1 Episódio 14

Souma is really susceptible to cracking up, and even memories will put him into laughing fits. But being self-conscious about this, he always tries to hide it. When he does this again at a clothing store his friend works at, the friend asks him why he does that, especially when its so easy to tell anyway. Later, Shun also repeats the same sentiment...