OK, so here's the scenario:

You are working (or playing) on your cool new Mac when suddenly, you wanted to do something but you forgot how to do it.

You called your friend who's your free 24x7 IT Support person. You woke him/her up (it's 2am), explained your dilemma and said "It's a life and death situation, you have to help me!"

Your friend, wanting to go back to sleep very quickly, gave you some answers but it's all techno babble and you have no idea what (s)he was talking about!

If only (s)he could show me....