[quote=@liferusher]
<Snipped quote by Savo>

Oh I didn't even know there was a drug called cloud 9. I only known of the e sport team cloud 9
[/quote]

From what I know cloud nine is a state of mind. During which you have a "feeling of extreme happiness or euphoria, feeling like you're floating on air." 

Though from a quick google search I see that there is a drug called that too, though that probably got its name from the phrase.