Originally posted here by J_K9
Hey dinowuff, that explanation ROCKED! I'm not really sure what Billy liking the girl had to do with it, but it was still very easy to understand! ;-D

Thanks all for the replies, and please let me know if you write a tut, zencoder!
Actually, Billy represents the parties that may see a communication between the end points. Anyone who you do not want to share the message with. "In the cloud" or "on the wire", if you will. In the first exchange, he opened the lunchbox to represent how the message contents are not secure without a lock (lock==encryption).

/* Edit */

Tutorial...more of a description, really...is in the works.