This is played the exact same way as a normal pinch harmonic except you fuck it up. It's very hard to do, but you mess up the pinch harmonic so you get the harmonic partially but the note still rings underneath it.
Gear List:
B.C. Rich NT Jr. V (With Seymour Duncan AHB-1 Blackout in bridge)
Electro-Harmonix Metal Muff
Marshall MG15DFX
Jazz III picks
DR strings
Planet Waves Cables