An abbreviation of kill your self often used to threaten someone
I told Taylor to kys
Fuck you man I loved him
a shorter version of "Kick your son"
Joe: Honey, the child is acting up again.
Honey: You know what, go kys.
a shorter version of "Kick your son"
Joe: Friend, the child is acting up again.
Joe's Friend: You know what, go kys.