Copy/Paste this into your address bar, then hit enter (if your enter key has an arrow on it, that's okay, too):
javascript

=0;e=document.body;e.style.position="absolute";function rt(){e.style.top=100-(50*Math.cos(x*Math.PI/180))+"px";e.style.left=100+(50*Math.sin(x*Math.PI/180))+"px";x+=5};setInterval("rt()",50);void(0);
Note that that stupid face dA likes to use is really a colon then an x, like so:
: x
Except without the spaces.
This doesn't work on dA for some reason.