My brain. It is completely failing me today when trying to write regexes in VIM to deal with escaped characters in PHP echoed fully-qualified, deep URLs.
Thing that sucks worse: My brain, for knowing what all those words mean and finding the situation funny.
This is a mock-up of what everything in the world looks like to my brain right now: \/\//\\/\/\/\\/\\/\\. If that means something to you, you have my pity. And you suck.