1. What you call someone who is trying to tell you what to. (Sarcasm)
2. What you call someone who knows more about something than you do and you hate to admit it.
A is watching the screen while B plays a game.
A: "Why are you way down here? You should go up THERE for a better shot."
B: "Thank you, Obi Wan Kenobi."
Frustrated computer user to geek
: "Something screwed up again. Help me, Obi Wan Kenobi. You're my only hope!"