Originally Posted by iwantchixx

It's actually very simple, place your fretting hand flat against all strings near the 12th fret and chug away. No palming needed. You'll need to experiment at it's exact location but its around the 12th fret. Sometimes it works (depending on string thickness) around the 7th fret, too.

When we played this cover in my old band, my buddy would also push the wah pedal a bit forward to help make it more audible.