I only know I'm truly high, is when I'm playing No one knows on Hard on Guitar Hero, and kicking ass. Only because I cannot feel my fingers enough to feel the pain.

Get up, try to walk around, if you're unbalanced, you're probably high. The biggest indicator for me is that if I close my eyes, and music is on, there is like a little play, or visions in my head.

Oh, and time slips can't forget about those. You swear it's been hours, in reality it's only been 4 minutes.

God I wish I had some weed right now...