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...
Let's see who can make it the farthest!
!لنرَ من يستطيع السّباحة أبعد
Mal sehen, wer von uns
weiter schwimmen kann!
voyons qui nagera le plus loin !
Vediamo fin dove arriviamo a nuotare!
Vamos ver quem chega mais longe!
Посмотрим, кто дальше заплывёт!