A bad winner?

I was playing against Nanoko, and he was mocking me after that he had won against me. Why?
Is this a cultural thing that i do not understand?

whining is so 2016...please don't

Such mocking is rudeness, nothing more. Also, Frontrunner's comment was quite unnecessary.

Who is Nanako?

Did Nanoko hurt your feelings?

Research shows that insecurity about oneself drives the attempts to hurt others.

Acho que desativar chat resolveria esses mimimi!