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...
When you put it on, the 
sleeves fit perfectly.
عندما ارتديتَه، جاءت الأكمام مناسبة تماماً
Bei dir haben die Ärmel
die perfekte Länge!
Las mangas te quedan perfecto.
Las mangas te quedan estupendamente.
Ça te va super bien.
Le maniche sono precise per te, Shun.
As mangas vestiram
perfeitamente em você, Shun.
Рукава сели идеально.