What is Leetest?
1.
See the definition for Leet.
A person that has more leetness than everyone else.
Leonardo da Vinci is the leetest mofo ever.
See
2.
It means "the person who wrote this definition"
At a public event..
X - "I want see your ID"
Y - "Don't you recognize me?"
X - "OH yeah...you're the leetest!"