Here is a bit of office humor from today:
Old MacDonald had a file, ee-i-ee-i-o,
And on that file he had a change, ee-i-ee-i-o,
With a diff-diff here, a patch-patch there,
Diff-patch, diff-patch everywhere,
Old MacDonald had a file, ee-i-ee-i-o.
P.S.: Those of you who don’t get it, should take a moment to learn about diff and patch utilities. For example, by reading this article.