This one always does it for me.
If you don't care who else hears it, and you have a decent stereo with kick a** speakers, turn it up to the threshold of pain, then turn it up two more notches.
Or use a really good pair of headphones.
If you don't have either, don't bother.
[youtube]http://www.youtube.com/watch?v=a2K-KIedy44[/youtube]
If your ears aren't ringing incessantly after, you did it wrong.
_________________
I'm not likely to be around much longer. As before when I first signed up here years ago, I'm finding that after a long hiatus, and after only a few days back on here, I'm spending way too much time here again already. So I'm requesting my account be locked, banned or whatever. It's just time. Until then, well, I dunno...