Seki-kun starts playing fuku warai in class... however it wasn't any old normal fuku warai! Yokoi-san is unable to look away from the surprising turn of events!
You're just in celebration mode 
all year 'round, Seki-kun.
Seki-kun macht wohl das 
ganze Jahr über Blödsinn.
Él siempre está disfrutando.
Siempre pensando en pasárselo bien.
Seki, lui, c’est toute l’année
qu’il s’amuse en cours.
Per te è festa tutto l'anno, eh, Seki-kun?
Você fica de brincadeira o ano todo, Seki.