This is old and my memory not what it used to be. However, i do recall hitting a steel ruler against an empty paint tin and making some sort of popping sound with my voice. Then exposing it to terrible amounts of electronic torture until it melted with sonic extacy!.
Some kind of sci-fi bubble sound. Like a ray gun or a bubble beam. Recorded a sound with my sony icd-ux533 and added a deesser, sci-fi and air reverb in pro tools.