kys is an acronym that stands for: K̲iss Y̲our S̲ister
Anon #1: Why do other anons keep telling me to, kys? What does it mean?
Anon #2: They want you to, kiss your sister! >-<
Anon #1: Oh cool, I'm going to go kms!
Awwww! A very cute acronym for "Kiss your sister"!
(On a family meeting)
Father (to son) : KYS! It's so cute!
Son : ahem... No.
Father : It stands for "Kiss your sister"!
Son : Ok...
The shortening of "Kill Yourself". Can be used in a variety of ways, such as genuinely telling people to do just that, or as a joke to friends.
Mean way >:( :"Kys, no one loves you bro."
Nice (sort of): "Lmaoo, kys"
Kys in a conversation mean kill yourself
Person 1: yo mom fine ash
Person 2: kys
The ultimate roast to completely break down somebody's anti roast system
Person 1: hey Johnny
Person 2:kys
Person 3: .......
shorter form of "kiss your sister"
-Man can I kiss you?
-No homo, kys