A friendly abbreviation meaning, "Keep Yourself Safe." Used by people who are feeling positive and want to make others day.
Tom: Hey, i'm going out to the local bar. See you in an hour!

Bill: OK Tom, don't forget to KYS!
by Brehm February 25, 2017
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KYS is short for 'Kill Your Self'

Mainly used in texting, it can be used in day to day situations, mainly as a conversation finisher, delivering an abrupt but powerful message to the recipient.
John: And that is why i am correct, and you are wrong *smiles like a smug twat*
Eddie: kys
by CXN December 14, 2016
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Critic: That movie sucked.
Guy: KYS, dude.
by thedubchild May 4, 2010
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Comes from an instrument known as a kymograph, which is a machine used to record the temporal variations of any physiological or muscular process. This devise could be used to measure the intensity of a sexual act on a specific part of the body.
For example, it could measure the heart rate of a woman about to have an orgasm. KY jelly could be used to lubricate the pad to the chest.
by KY Man March 2, 2006
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Kill...Yourself
Random guy: Hi
You: KYS
by HiLOhj March 19, 2019
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