Fanta CM in K-ON!! and Working! and Angel Beats!

Do you remember the Japanese Fanta CMs where various extravagant teachers showed up in a class and held a strange lesson? Somebody took the audio from those CMs and inserted it into scenes from K-ON!!, Angel Beats!, and Working!. Particularly the K-ON! video is quite well done but all the three are very funny.

Original Fanta CMs:

K-ON!! version

Working! version

Angel Beats! version