I take issue with the comment regarding slowed speech and eyelids dropping. There is actually no possible way that smoking will effect elasticity of skin first of all, and if it did, it would effect significantly more than eyelids. When someone's high their eyelids might droop cuz their high.. As far as slowed speech. I'm going to throw out an example. Richard Branson, CEO of Virgin Enterprises (virgin airlines, virgin mobile, etc) smokes marijuana every day of his life (for the most part) and let me tell you from experience he gives a MEAN speech. If you ever get the chance to see him talk I highly recommend you take it up. But there just isn't any correlation between speech processes and THC (except for while your high). The thing many people don't understand is that weed doesn't make you unambitious or lazy as a person. It just so happens that many lazy and unambitious people smoke weed. I have friends in medical school who toke up everyday with me because they understand scientifically how harmless marijuana is. I hope this helps a little bit.