You're an clueless person who might just asked the wrong thing to the wrong person on the internet.

FORUM You: Hey, what does "KYS" mean?

M5s1c4y0: K--l Yourself. You serve Zero purpose.

as soon as that reply has been sent, there is an drama in the replies, mainly the "But they were just asking", to which Ryo replied mainly with "You should K--l Yourself NOW."