@Toncatsu
Actually, the pose is referencing the memetic Colombia pose. (note: Colombia is not the same as Columbia.)
That it so happens to somewhat resemble the Alma Mater sculpture at Columbia University is a coincidence.
Just ask yourself this: Is a Japanese person more likely to be familiar with 21st Century Japanese internet memes or 20th Century American College Statues?
@justforthelulz as a Colombian, dude I was so fucking confused, why is a manga mentioning my country and the fuck is the Columbia pose, we don't have that! Thanks for clarifying