Because you can only shave one yak at a time.

20060529 096 by otama in Flickr

Here's a picture of a yak

Why do programmers go on about yaks?
Don't worry. We don't know either.

Here's a picture of a razor

Have you ever thought about shaving a yak?
I mean really thought about it?

Straight razor by rpscott123 on Flickr
pin side of Intel R80C188XL12 by htomari on Flickr

Here's a picture of a processor

Ever wished you could treat your projects like a virtual machine?
No, neither have we, but we built it anyway.