Step 1) Type "sudo visudo".

Step 2) At the bottom of the "Defaults" (near the top of the file) add, on a new line, "Defaults insults".

Step 3) Save the file.

"What did I just do to my computer?" you may be asking yourself. Something wonderful. Now, whenever you issue a sudo command and misstype your password, your computer will call you names. My favorite: "Listen, burrito brains, I don't have time to listen to this trash."