there's got to be a joke with the pronunciation, how you say Victory?
Maybe it's the Vi sound they're having trouble with, as it's not a normal Japanese syllable?
Edit: Yes, that's it, there was the same joke about Valentine last year:
※ Students at Chi-Hatan are not good at imported words ♥
Updated
Fukuda will attempt to fulfill Tamada-dono's regret by saying the name of Hosomi-dono's hairstyle!She was there?!Fukuda, don't! It's too dangerous!V-...V-...Vi...I, Ikeda, will fulfill Fukuda's wish!Fukuda!No! I, Teramoto, will!Vi...Vi...Ikeda!? Teramoto!?What's going on...?