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 it's so easy to tell anyway. Later, Shun also repeats the same sentiment...
But you are.
لكنّك كذلك
Bist du doch.
Vamos, se nota que eres M.
Vamos, se te nota que eres M.
C’est la vérité.
Secondo me invece sì.
É, sim.
Точно M.