of crime and passion

Hi Katy- This question is for whoever remembers. In the song "Of Crime and Passion", there's this sound that I've been wondering about forever, and maybe somebody can help me out. After the line "Bride of Wire" there's a noise that sounds like someone is opening a can of soda, or beer-one of those metal tab things. Does anyone remember what that noise really is? It's just such an odd noise in such an interesting place, I've always been curious about it. Thanks. -Vahona

I ASKED THE WHOLE BAND AND NOT ONE OF THEM REMEMBERS. THEY PROMISE TO LISTEN AGAIN THOUGH....