Lyric discussion by oakley242424 

Cover art for You Would Know lyrics by Queens of the Stone Age

My girl's all out of focus I ain't no big surprise Daddy got his gun loaded Got cross hairs in his eyes Shut up, oh Shut up, oh

In this part, my opinion is that she out of focus because she is drunk, messes with your vision. And if you've heard smells like teen spirit, you have. Kurt says, bring your guns. Queens might be referring to a syringe of heroin, and he has cross hairs in his eyes means his pupils are dilated.