to be the most fly; to be more fly than another
"shit, you know alex and emily? they are THE flyest."
A complete goof; usually somebody who isnt the brightest but is very funny. A person who fails at almost everything such as majong and only mows lawns for a job, overall a complete noob and will scam you at any chance they can get.
Refer to Samtaro, Quite similar
"Oner Flyest scam me!"