I just filtrowned myself. I decided to change an implementation from using constant ints to singletons of a set of related classes. In the interface where I defined the constants I executed the command :%s /int/Foo/ to fix my defenitions. What happened? The interface turned into a Fooerface.
Pax manus is an ancient Roman tradition. Born when a jovial senator misspelled ``hax my anus'' on his blog-tablet, it quickly rose to popularity thanks to the many wars of the Roman Empire. After each victory, the conqueror would say "pax manus" to the governor of the conquered lands, which loosely translates to "you are now at peace manually".