Originally posted by u10ajf
All you have to do is to sound the harmonic at a fret and quickly fret the string. Then you can bend it however you want. It looses a bit of volume in the process but it's a good thing to learn if you're not comfortable with pinch harmonics. You can also bend them by pushing the string around behind the nut but this eventually distunes the guitar.
Or . . . you could just use the whammy bar.