Lyric discussion by lynnie_ 

Cover art for Siva lyrics by Smashing Pumpkins, The

Siva is another spelling of Shiva which is the seven day mourning period observed by the Jewish when a close family member dies. I think the song is about a guy losing his temper and starting a fight with his girlfriend or wife and he's feeling bad about it so "I don't live - I inhale" (marijuana). It seems like he thinks she's using his guilt to get something so he just wants to know what she's after so he can get the whole situation over with faster, but he also lets her know that he won't be used - "I don't give - I unveil."