ALSO, as an addition from experience, whippits are a GREAT high.
Fast, cheap, fun, theorhetically legal (buy, not usage to get high) and a quick HIGH high that dies quickly, as well.
HOWEVER, since it's inhaling chemicals to directly fuck with your brain, DO NOT DO THEM.
I'd say if you're going to try anything, try...well, I guess I can't answer that.
I'd say pot, but it's illegal, and no one wants to get busted for something so stupid.
So then I'd say salvia, cos it's legal, but then you're stepping into hallucinogenics and that is quite bad for some people.
I'd steer clear of hallucinogenics; I like to have consciousness of my existence.
Better yet, if you're straight, just stay that way.
Being high is fun and all, but it's not worth it if you give up everything else.
Trust me.