A Touch of Madness

Today I did one of the hardest things. I gave tpau my keys and let her go. I hope, vainly or falsely perhaps, most definitely foolishly, that she still needs me half as much as I need her, that she misses me and that we can be together again. Sappy, I know, but I love her.

So, my brother's computer is in less than ideal shape right now, and since I'm currently living at home, I was thinking of giving him an account on my machine. Is there a way to enable a computer running OS X to hot-swap between users? Basically, I want to know how to set up the quickest password -> usability chain.