1.) A common exclamation or sorts typically made by druggies, homosexuals and heroin addicts
Druggie: Dude, like, wanna get WASTED??
Heroin Addict: hell YEA!!!!
The above person has no value as a human being, they called Syful H. "hot". Who the fuck are you?
In any case,
"Hell yea"- A simple expression used to put emphasis into liking of something. Used by many people, not only drug addicts, heroin addicts and homosexuals.
"Wanna have sex?"(Hot chick)
"Hell yea!"(Some guy)