:(){:|:&};: without having to look it up. when i saw it for the first time, around twenty years ago, it looked like complete gibberish to me...edit: don't try it in your shell
@hi OMG, you got me! This is my first time seeing this.
It looked like gibberish at first, then I thought it looked faintly like bash. So I tried running it and my memory/CPU maxed out, so I had to hardware shutoff my laptop...
Looking at it now, it makes sense. Create a function that recursively forks a pipe to itself... The "colon" character threw me off.