Lyric discussion by shampoosuicide 

Cover art for Under The Stairs lyrics by Birthday Massacre, The

For some reason this reminds me of highschool bullies. The victim sarcastically feels sorry for them because they are immature. However, over time she lets the teasing get to her and threatens to kill herself so that the bullies rethink how they treat people. In other words, they won't be laughing at her anymore if she kills herself because of them.

The bullies don't take her seriously so they continue tormenting her. She wants them to find another person to tease and leave her alone before she is pushed off the edge. She ends up commiting suicide and thinks no one will care about her. She's waiting (in a basement, perhaps?) for someone to find her body.

Who knows.