Pinch Harmonic.
Quote by soccermom
Of course eating unbelievable amounts of anything can probably harm you, but i chose bananas because they look like willies.
it's called pinch harmonic
you have to pick a string (f.e. the d string at the 5th-fret) and you have to take the pick at it' bottom...after picking, your thumb has to touch the string lightly to make this squeeling noise....my english is too bad to explain this in good english...better have a look at the ug-lessons section or at cyberfret.com...there are videos for that
Hold my breath
as I wish for death
Oh please god wake me
Pinch harmonics. Do it the same way as Ali said, but keep in mind that you'll get different sounds depending on where you pick. So when you do it, start from around the neck, and work your way along the string to the bridge, pinching all the way.