Lyric discussion by secondhandsmoke 

Cover art for Mama's Room lyrics by Under The Influence Of Giants

I believe its about a guy who, like mascardo said, needs to fill a void in his life by doing things that bring him instant gratification. But he reliezes that what he is doing may be wrong because the sexual act that he is doing with this girl is entirely empty. And this makes him feel even worse and even more alone. It's kind of an endless circle.