Slay means kill it.
The Full Answer
Slay is a slang term that means kill it.
It is used to acknowledge that someone has done something really awesome…
or has destroyed their competition…
or looks really sexy…
or has been very funny.
Slay also means to have sex with.
Where Would You See Slay?
In texting… and on social media, such as Instagram… and Facebook… and on messaging apps, such as Snapchat.
Slay Jay Z, slay!
You slay girl!
Other Slay Meanings
To kill in a violent way.