A while ago, I taught my students the phrase TGIF (which I transliterated for them as Arigatou kami-sama, kinyobi desu!). Today, I guess this one student in the back was just particularly excited for the weekend as he repeatedly yelled TGIF!!! the entire period and all I could do was nod my head and go “yeah, me too kid.” 

Incidentally, his new nickname is Friday Boy.