An abbreviation for the words, ‘Keep yourself safe’. Would be normally used from someone who cares truly about who they are saying this to. For one example..
(person1 says something negative to pers2)
pers2 “You should really kys (keep yourself safe) (person2 in this case knows person1 is being negative but person2 is nice and tells person1 to keep themselves safe.)
k: kill
y: your
s: self
that’s it.
person 2: Kys
person 1: What😨
person 2: do it no balls
It can mean alot of things. It can mean, feks: "Kill yourself. Kiss your sister. Keep yourself safe.
By all means the word must often use is for kys. So feks. Of a person just randomly types kys. The probably means kill yourself. But your can clearly twist his words. And say stuff like, why should i kiss my sister or thanks. I will keep myself safe.
Dude, kys out there. - keep yourself safe
Fuck you noob, kys - kill yourself
Dude, go ahead and kys - kiss your sister
"Son, what does kys mean"
"It means keep yourself safe"
"ok son remember to kys"