At the risk of ruining the joke, can someone explain the references?
i4mpr0 said:
Kaga doing what other Kaga's from other series doing a specific moment in their shows, I think.
In particular, the upper-left is mimicking Ai Kaga (a super-shy girl) from Sayonara Zetsubo Sensei, and the upper-right is mimicking Kouko Kaga's famous rose bouquet slap from Golden Time.
I'm not familiar with the other two series mentioned in the tags to explain those.