Please be horrified after the tone.

> rvm upgrade 1.9.3-p392 1.9.3
Are you sure you wish to upgrade from ruby-1.9.3-p392 to ruby-1.9.3-p448? (Y/n): y
Installing new ruby ruby-1.9.3-p448
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.7/x86_64/ruby-1.9.3-p448.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Installing requirements for osx, might require sudo password.
Password:

… WHAT ARE YOU GOING TO DO?!

Why do you need my password to elevate to root? What are you going to do as root? How long will you be root for?

Ladies and gentlemen, please observe the best possible example of why you should say what you’re going to do when you sudo.

In this case, rvm just wanted to upgrade my MacPorts tree and install apple-gcc42. Which is terrifying in and of itself.