Some people use it as “Keep yourself safe!”, but I prefer a more negative and internet friendly definition: “kill yourself”. There are few situations in which this instruction is not appropriate.
Jason- “Lana del Ray’s music is so depressing, if you listen to it you’ll probably KYS”
Stephen- “KYS you ugly bitch”
Stephen- “KYS you ugly bitch”
by Uncle Sam’s armpit October 10, 2023
Get the KYSmug. by its kymali November 26, 2021
Get the Ky-Malimug. 
Kys can mean "Keep you safe"
by RivenAp December 19, 2017
Get the Kysmug. 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.)
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.)
by bigguccibumtit178 September 8, 2023
Get the Kysmug. by Evilili November 14, 2023
Get the Kysmug. The word KYS is typically used to mean, I watch orgy porn with multiple so called "MILF's" pegging slutty femboy men.
It can also mean that the user of the word will go and watch or do the aforementioned type of pornography
It can also mean that the user of the word will go and watch or do the aforementioned type of pornography
by ultraomegabigppman69 December 16, 2023
Get the KYSmug.