If somone says this to you it means they kissed you but not literally. It comes from the Norwegian word "kyss" and this definition is supposed to change the meaning of "kys" that originally was "kill yourself"
It's danish for kiss
its doesnt mean kill your self or keep yourself safe you fucking retarde unminded zero braincell 6 year old down syndrome fuck
person: Hej, vil du have et kys?
person 2: Nej for fanden
A chat slang for "Kill yourself"
"Go kys @NoobMasterXXX69 🤬🤬🤬 !"