TV's Frink said:
If you think that scene is good, it's even better in the version where Obi accepts the offering.
Mind altering drugs indeed, he hallucinated everything from Ric Ollie to Spock there.
Either that or Deathsticks just really get's you in touch with the force. We already have Midichlorians, so why not? The PT's ridiculous enough as it is.
Something else also just occurred to me; are Jedis allowed to drink? Because Obi-Wan was having a pretty funky looking drink in that scene. Heck, it's glowing.