I knew there was magic smoke, but had no idea about the holy water

I've also left a few solder blobs in my time...okay more than a few...okay it was probably the only thing I ever actually did to a circuit. "A blob here, a blob there...hey, it works now!...sort of."

You really have to sit and absorb this one. Every time I glance at it, I notice something I didn't see before. Enjoy!

via xkcd.com