There's trouble at the beach.  The four swim club members are forced to revisit their motivation to swim.  After Rei asks Makoto about his odd behavior during the training camp, Makoto tells them about his past.
Don't be stupid!
Sei nicht dumm!
Déjate de tonterías.
No digas tonterías.
Ne dis pas de bêtises !
Non dire cose stupide!
Não seja tolo!
Не глупи!