While taking their usual bath, the boys discuss how much Kyotaro is like an old man. The next day, when they go to school, they find themselves exhausted by climbing up the stairs... and learn that they're all becoming old men!
You're a total old man!
!أنت عجوز تماماً
Du bist ein Dinosaurier geworden!
¡Eres un anciano!
¡Eres un viejo!
T’es un fossile !
Sei proprio un vecchietto a tutto tondo!
Você se tornou um total senhor de idade!
Да ты настоящий старик!